I believe there's quite a good number of literature on the conflict out there. Though I'm not sure if your target is just the most recent studies on the issue. The following can give you some historical background on the conflict:

Croissant, M. P. (1998). The Armenia-Azerbaijan conflict: causes and implications. Greenwood Publishing Group.

Khan, M. A. (2021). THE CONFLICT OF AZERBAIJAN AND ARMENIA WITH SPECIAL REFERENCE TO NAGORNO KARABAKH: AN OVERVIEW. Journal of Malay Islamic Studies, 4(01).

Klever, E. (2013). The Nagorno-Karabakh conflict between Armenia and Azerbaijan: An overview of the current situation. European Movement, 24.

Markedonov, S. (2018). Russia and the Nagorno-Karabakh Conflict: A Careful Balancing. Istituto di Studie Politiche Italiano (ISPI), 12.

Even though is not a recent research, this paper could give you some background:Article A Conflict Analysis of the Armenian-Azerbaijani Dispute

This recent research (junior) toghether with the references, could be maybe more helpful: https://www.airuniversity.af.edu/Portals/10/ISR/student-papers/AY21-22/Armenia_AzerbaijanWarsNK_Akhmetova.pdf

Hello, please check following websites, perhaps you will find information you are interested in:

https://www.pism.pl/publikacje/Wojskowy_wymiar_konfliktu_o_Gorski_Karabach (I suggest to scroll the page down and download the pdf file)

https://www.csis.org/analysis/air-and-missile-war-nagorno-karabakh-lessons-future-strike-and-defense

https://www.cacianalyst.org/publications/analytical-articles/item/13665-nagorno-karabakh-the-democratization-of-precision-strike-and-the-viability-of-military-power.html

https://www.worldpoliticsreview.com/articles/29229/what-the-nagorno-karabakh-conflict-revealed-about-future-warfighting

I can send you a bit of information I presented in a national conference not too long ago. I hope it may probve of interest.

Dr. James P. Welch