Volume 28, Issue 3, March 2015, Pages 440-446
Amit Singh; R.K. Shrivastav; Amit Bhatnagar
Volume 23, Issue 3, December 2010, Pages 243-252
Ram Singh; G. C. Sharma; M. Jain
Volume 22, Issue 1, April 2009, Pages 99-106
Sudheer Sharma; G.C. Sharma; Madhu Jain