Sen, Bibhutibhusan. A treatise on special functions, for scientists and engineers. - Bombay, New York, Allied Publishers [1967] - 164 p. 23 cm. Bibliography: p. 162. LCCN: sa 68012366 Subjects--Topical Terms: Functions, Special.Spherical harmonics. LC Class. No.: QA351 / .S45 Dewey Class. No.: 517/.3