1. Maochao Xu  (2010):  ``Stochastic Orders in Heterogeneous Samples with Applications" at Portland State University ( Associate Professor at Illinois State University, USA).

2. B. Khaledi (2000). ``Stochastic comparisons and dependence among order statistics, spacings and
concomitatnts of order statistics", at Indian Statistical Institute, New Delhi ( Professor at Razi University, Iran).

3.  Isha Bagai (now Dewan) (1987) ``Tests for some  hypotheses under the competing risks model", at Panjab University,
Chandigarh, (jointly with Prof. J. V. Deshpande) ( Professor at Indian Statisical Institute, New Delhi, India).