Volume 18, Issue 6, June 2017, Pages 1611-1615
Prakash Raj Neupane; Krishna Kanta Poudel; Zhibi Huang; Roberta Steel; Janaki Kharel Poudel
Volume 13, Issue 1, January 2012, Pages 225-229
Volume 9, Issue 3, March 2008, Pages 413-416
Volume 6, Issue 2, February 2005, Pages 139-142