λ-invariants of Selmer groups of elliptic curves with positive μ-invariant, Suman Ahmed & Sudhanshu Shekhar, Journal of the Ramanujan Mathematical Society, Volume 30 (2015), Issue 1, 115-133. [PDF] [Journal]
Root numbers and parity of local Iwasawa invariants, Suman Ahmed, Chandrakant Aribam & Sudhanshu Shekhar, Journal of Number Theory, Volume 177 (2017), 285-306. [Arxiv] [Journal]
On the Euler characteristics of signed Selmer groups, Suman Ahmed & Meng Fai Lim, Bulletin of the Australian Mathematical Society, Volume 101 (2020), Issue 2, 238-246. [Arxiv] [Journal]
On the signed Selmer groups of congruent elliptic curves with semistable reduction at all primes above p, Suman Ahmed & Meng Fai Lim, Acta Arithmetica, Volume 197 (2021), 353-377. [Arxiv] [Journal]
On the algebraic functional equation of the eigenspaces of mixed signed Selmer groups of elliptic curves with good reduction at primes above p, Suman Ahmed & Meng Fai Lim, Acta Mathematica Sinica (English series), Volume 37 (2021), 289–305. [Arxiv] [Journal]
On the algebraic functional equation for the mixed signed Selmer group over multiple Z_p -extensions, Suman Ahmed & Meng Fai Lim, Proceedings of the AMS, Volume 149 (2021), Number 11, 4541-4553. [Arxiv] [Journal]