7Search.ccvikash kumar singhvikash kumar singhvikash kumar singh vermavikash kumar singh google scholarvikas kumar singh linkedindr vikas kumar singhvikash kumar in hindivikash kumar verma patel singhvikash kumar verma patel singh srvignesh kumar singh avikash kumar verma patel singh ravikash kumar verma patel singh srivikash kumar verma singh patel sriva