K. Sekarbabu1, G.Ravindran1 , Suthakar Krishnaswamy1, AnnidaBalakrishnan2, D. “Effect of Different Environmental Volleyball Practice on Selected Biochemical and Hematological Variables”. Recent Research in Science and Technology, vol. 3, no. 1, Jan. 2011, https://updatepublishing.com/journal/index.php/rrst/article/view/577.