frequently checked : viven __at__ cse __dot__ iitb __dot__ ac __dot__ in
my gmail id is : vivenrajendra __at__ gmail __dot__ com
please replace __at__ by @ and __dot__ by .
You can call me on +91 98699 06915
If u want to snail mail me then: room-172, hostel-2, IIT Bombay Powai, Mumbai, 400 076, India.