1) Lorentzian Manifold that admits a type of Semi-Symmetric Metric Connection : - A. Konar and Bijita Biswas – Bull.Cal.Math.Soc.93, (5) 427 – 434 (2001)

2) Deformation Algebra on Semi-Symmetric non- Metric Connection :- Bijita Biswas and U.C.de and M.S. Rahman – J. Math & Math.Sci.17.2002.1 – 8.

3) Quarter – Symmetric non- Metric Connection on a Sasakian Manifold :- Joydeep Sengupta and Bijita Biswas – Bull. Cal.Math.Soc.95(2) 169 – 176 (2003)

4) Space – time with Covariant – Recurrent Energy – Momentum tensor :- A. Konar and Bijita Biswas – Journal of the Calcutta Mathematical Society,1,75 – 90 (2004)

5) Semi- Symmetric Metric Connection with Pseudo – Symmetric Torsion tensor :- Bijita Biswas and Joydeep Sengupta and A. Konar – 33(2),2012, 144 - 151