I found something regarding your query.
Both are working as a professor at the Department of Psychology, Banaras Hindu University Varanasi.
Sarivasta information on website and mention he retires.
Dr A. K. Srivastava
Organizational Behaviour, Human Resource Development
But here I found other author email and details
Ashok Pratap Singh
Department of Psychology
DG/R-1, Tulsidas Colony, BHU Campus, Varanasi-221005, U.P.
0542-2369967 0542-2369780 09415222327