Publications:
 A. K. Upadhyay, A. K. Tiwari, D. Maity: Semiequivelar Maps, Beiträge zur Algebra und Geometrie, 55(2012), 229242. http://link.springer.com/article/10.1007/s1336601201306
 A. K. Tiwari, A. K. Upadhyay: Semiequivelar maps on the torus and the Klein bottle with few vertices, Accepted (Mathematica Slovaca). http://arxiv.org/abs/1509.07325
 F. H. Lutz, T. Sulanke, A. K. Tiwari, A. K. Upadhyay: Equivelar and dcovered triangulations of surfaces. I, Accepted (Graphs and Combinatorics). http://arxiv.org/abs/1001.2777
On Arxiv: Papers Presented in International/National Conferences:  On dcovered triangulations of closed surfaces, National Conference & Workshop on High Performance Computing & Application, Feb 810, 2010, Banaras Hindu university, Varanasi.
 On upper bound for dcovered triangulations of surfaces, Indian mathematical Society, 81(14), 2012
 Semiequivelar maps and dcovered triangulations, National Conference on Recent Advances in Mathematics, December 1214, 2012, Rani Durgawati University, Jabalpur.
Workshops/ Conferences Attended  Advance Foundation School (AFS), IISER Pune, December 431, 2011.
 Workshop on Introduction to Graph and Geometric Algorithm, NIT Patna, March 2628, 2011.
 National meet of research scholars, IIT Madrass, October 1115, 2010.

