Author: Thakkar S.R.;Joshi H.D.
Author: Parikh K.;Vyas P.;Parikh S.S.
Author: Devasenathipathi N. Mudaliar ., Nilesh K Modi .,
Author: Pinak Desai ., Nilesh Modi .,
Author: Pattnaik P.K.;Swetapadma A.;Sarraf J.
Author: Kameshkumar R. Raval ., Nilesh Modi .,
Author: Pathak S.J.;Vyas P.R.
Author: Patel A.;Vyas P.R.
Author: Thakkar S.R.;Joshi H.D.