Dear All, I am looking for following article, if anyone professional has a copy then kindly send me. http://www.tandfonline.com/doi/abs/10.1080/09398368.1991.11463257 regards, Vinay Kumar Sharma Librarian Sarath Engineering and Technology N.H. - 08, Nr. Chiloda Himatnagar-383125 Gujarat -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.