Participated and presented a paper entitled "Assessing the Effects of Holling Type-II Treatment Rate on HIV-TB Co-Infection" in 19 th BIOMAT International Symposium on Mathematical and Computational Biology, Bolyai Institute, University of Szeged / Hungarian Academy of Sciences, Hungary during October 21 - 25, 2019.

 Participated and presented a paper entitled "On the basins of convergence of the libration point in the axisymmetric restricted five-body problem: Convex case" in the XXXth General Assembly of the International Astronomical Union during 20-31 August, 2018, Vienna, Austria.

 Participated in the International Conference CELMEC-VII, The Seventh International Meeting on Celestial Mechanics held at Balletti Park Hotel in San Martino al Cimino (Viterbo, Italy) during September 03-09, 2017 and presented a paper entitled "Restricted Four-Body Problem with Variable Mass".

Participated in the "International Conference on Celestial Mechanics and Dynamical Astronomy" held at Maulana Azad Urdu University, Hyderabad from Dec 15-17, 2015 and presented a paper entitled "Stability of Libration Points in the Restricted Four-Body Problem with Variable Mass".

Presented a paper entitled "Stability of Libration Point L4 in the Restricted Three Body Problem" in 3-week UGC Sponsored Refresher Course in Mathematics and Operation Research held at CPDHE, University of Delhi duringDecember 13, 2010 to January 4, 2011.

Presented a paper entitled "Infinite Sets and Cardinal Numbers" in a UGC Sponsored Refresher Course in Mathematics (Math-14) entitled held at CPDHE, University of Delhi during May 13 to June 02, 1998.

Presented a paper entitled "Symbolic Math using Mathcad" at UGC Sponsored Orientation Course in Information Technology held at CPDHE, University of Delhi during April 05 to May 03, 2004.