Raghavan R. method for computing unsteady flows in porous media / R. Raghavan, E. Ozkan, 1994. - 118 p. - Текст : непосредственный.
Leak prevention and corrective action technology for underground storage tanks / A.C.Gangadharan,T.V.Narayanan,R.Raghavan и др., 1988. - XXII,426 p. p. - Текст : непосредственный.