Rakesh Gupta ; S K Parashar ; H K Chopra... http://www.jiaecho.org/article.asp?issn=2543-1463;year=2020;volume=4;issue=2;spage=145;epage=148;aulast=Gupta.
,
2020
V. Amuthan ; R. V. A. Ananthcal http://www.jiaecho.org/article.asp?issn=2543-1463;year=2017;volume=1;issue=3;spage=189;epage=196;aulast=Amuthan.
,
2017