Acton, J.R. Solving equations with physical understanding / by J R Acton and P T Squire - USA: Adam Hilger Ltd., 1985. - x, 219p. ISBN: 0852747578 Subjects--Topical Terms: Forced oscillationMathematical preliminariesParabolic functionPhysics Dewey Class. No.: 530.15535 / ACT/S