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2. ÜLGEN, Semail and ÅžENGELEN SEVÄ°M, Esra (2016), Some Ricci-Flat (Alpha, Beta)-Metrics, Periodica Mathematica Hungarica, 72(2), 151-157. DOI: 10.1007/S10998-016-0115-6.

3. ÜLGEN, Semail, SHEN, Zhongmin, ÅžENGELEN SEVÄ°M, Esra (2015), Spherically Symmetric Finsler Metrics with Constant Ricci and Flag Curvature, Publicationes Mathematicae Debrecen, 87(3-4), 463-472. DOI: 10.5486/Pmd.2015.7358.

4. LONG, Jieyi, LI, Dawei, MEMÄ°K ÖÄžRENCÄ°, Seda, ÜLGEN, Semail (2013), Theory and Analysis for Optimization of on Chip Thermoelectric Cooling Systems, IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 32(10), 1628-1632. DOI: 10.1109/Tcad.2013.2261436.

5. ÜLGEN Y., Semail (2009), K-Exact Groups and Coarsely Embeddable Groups, Proceedings of the American Mathematical Society, 137(07), 2393-2402. DOI: 10.1090/S0002-9939-09-09870-0.

6. ÜLGEN, Semail, Fadi Al-Turjman, Reda Daboul, Hadi Zahmatkesh (2019), Cost-Effective Framework for the Optimal Placement of Drones in Smart Cities,  July 2019,  DOI: 10.1201/9780429294327-8, In book: Drones in IoT-enabled Spaces, pp.139-158                                                                                                       

7. S. ÜLGEN, “Some Ricci flat Finsler metrics,” Anadolu Üniversitesi Bilim Ve Teknoloji Dergisi - B Teorik Bilimler, vol. 5, no. 2, pp. 129–137, Jul. 2017.

8. SIMSEK HAKAN (2017). On focal curves of null Cartan curves. TURKISH JOURNAL OF MATHEMATICS, 41, 1579-1590., Doi: 10.3906/mat-1604-79

9. SIMSEK HAKAN,ÖZDEMIR MUSTAFA (2017). Rotations on a Lightcone in Minkowski 3-Space. Advances in Applied Clifford Algebras, 27(3), 2841-2853., Doi: 10.1007/s00006-017-0771-5

12. SIMSEK HAKAN,ÖZDEMIR MUSTAFA (2016). On Conformal Curves in 2 Dimensional de Sitter Space. Advances in Applied Clifford Algebras, 26(2), 757-770., Doi: 10.1007/s00006-015-0614-1

13. SIMSEK HAKAN,ÖZDEMIR MUSTAFA (2016). Generating hyperbolical rotation matrix for a given hyperboloid. Linear Algebra and its Applications, 496, 221-245., Doi: 10.1016/j.laa.2016.01.038

14. SIMSEK HAKAN,ÖZDEMIR MUSTAFA (2016). Bäcklund s Theorem for n Dimensional Lorentzian Submanifold in the Minkowski Space mathbb E 1 2n 1 E 1 2 n 1. Results in Mathematics, 69(1-2), 201-223., Doi: 10.1007/s00025-015-0479-6

15. SIMSEK HAKAN,ÖZDEMIR MUSTAFA (2015). SIMILAR AND SELF SIMILAR CURVES IN MINKOWSKI in SPACE. Bulletin of the Korean Mathematical Society, 52(6), 2071-2093., Doi:10.4134/BKMS.2015.52.6.2071

16. SIMSEK HAKAN,ÖZDEMIR MUSTAFA (2015). The Sub Parabolic Lines in the Minkowski 3 Space. Results in Mathematics, 67(3-4), 417-430., Doi: 10.1007/s00025-014-0409-z

17. ÖZDEMIR MUSTAFA,ERDOGDU MELEK,SIMSEK HAKAN,ERGIN ABDULLAH AZIZ (2014). Backlund transformation for spacelike curves in the Minkowski space time. KUWAIT JOURNAL OF SCIENCE ENGINEERING, 41(3)

18. ÖZDEMIR MUSTAFA,ERDOGDU MELEK,SIMSEK HAKAN (2014). On the Eigenvalues and Eigenvectors of a Lorentzian Rotation Matrix by Using Split Quaternions. Advances in Applied Clifford Algebras, 24(1), 179-192., Doi: 10.1007/s00006-013-0424-2

19. Sadic, Senay, Jorge Pinho de Sousa, and Jose Antonio Crispim. "A two-phase MILP approach to integrate order, customer and manufacturer characteristics into Dynamic Manufacturing Network formation and operational planning." Expert Systems with Applications 96 (2018): 462-478.      

20. Sadic, Senay, and Gulgun Kayakutlu. "Integrating decision trees and cognitive maps for market segmentation in service sector." PICMET'07-2007 Portland International Conference on Management of Engineering & Technology. IEEE, 2007.                                                                               

21. Sadic, Senay, Jorge Pinho de Sousa, and José António Crispim. "Flexibility in the Formation and Operational Planning of Dynamic Manufacturing Networks." Working Conference on Virtual Enterprises. Springer, Cham, 2015.

22. Sevgi Åžengül Ayan, Ahmet K. Sırcan, Mohamedou Abewa, Ahmet Kurt, UÄŸur Dalaman & Nazmi YaraÅŸ , Mathematical model of the ventricular action potential and effects of isoproterenol-induced cardiac hypertrophy in rats, European Biophysics Journal. DOI: 10.1007/s00249-020-01439-8

23. Deniz GençaÄŸa ,Sevgi Åžengül Ayan, Hajar Farnoudkia andSerdar Okuyucu, Statistical Approaches for the Analysis of Dependency Among Neurons Under Noise, Entropy 2020-03-28 DOI: 10.3390/e22040387     

24.Sevgi Åžengül, Robert Clewley, Richard Bertram & Joël Tabak, Determining the contributions of divisive and subtractive feedback in the Hodgkin-Huxley model, Journal of Computational Neuroscience 2014-12  DOI: 10.1007/s10827-014-0511-y

25. Peter J. Duncan, Sevgi Sengul, Joel Tabak, Peter Ruth, Richard Bertram & Michael J. Shipston. Large conductance Ca2+-activated K+channels (BK) promote secretagogue-induced transition from spiking to bursting in murine anterior pituitary corticotrophs, The Journal of Physiology, 2014-12 DOI: 10.1113/jphysiol.2014.284471              

26. Ferhan M.Atıcı, SevgiÅžengül.  Modeling with fractional difference equations, Journal of Mathematical Analysis and Applications 2010-09 DOI: 10.1016/j.jmaa.2010.02.009                  

27. Gul, M. Ak, M. F., & Guneri, A. F. (2019). Pythagorean fuzzy VIKOR-based approach for safety risk assessment in mine industry.  Journal of Safety Research, 69, 135–153.

28 . Gul, M., & Ak, M. F. . “A comparative outline for quantifying risk ratings in occupational health and safety risk assessment. Journal of Cleaner Production”, 196, 653–664.

29. Gul, M., & Ak, M. F. .”Assessment of Occupational Risks from Human Health and Environmental Perspectives: A new integrated approach and its application using fuzzy BWM and fuzzy MAIRCA” Stochastic Environmental Research and Risk Assessment