Simple 3-designs and PSL(2,q) (with Dijen Ray-Chaudhuri) : Designs, Codes, and Cryptography, Volume 44 (2007) .
Graphs with restricted valency and matching number (with Niraj Khare) :  Discrete Math., Volume 309, Issue 12, (2009).
New infinite families of Candelabra systems with block size 6 and Steiner designs J. Comb. Inform. Sys. Sci., Volume 34, (2009).
A transform of complementary aspects with applications to entropic uncertainty  (with P. Mandayam,  S Wehner) : J. Math.Phy., Volume 51, Issue 8,(2010). Also here (online journal copy).
Forbidden Configurations and Steiner Designs : Designs, Codes, and Cryptography, Vol 65(2012), Issue 3, 353-364.
On an Extremal Hypergraph Problem Related to Combinatorial Batch Codes (with Srimanta Bhattacharyya) : Disc. App. Math, Volume 162, (2014), 373380. Here is the online publication.
Deterministic and probabilistic algorithms for stabilizing discrete-time switched linear systems (with A. Kundu, D. Chatterjee) : submitted. Here it is on arxiv.
The Gap between the Chromatic number and the Distinguishing Chromatic Number (with Sajith P.) : submitted. Here is the arxiv link.