Physical problems solved by the phase-integral method
Physical problems solved by the phase-integral method [electronic resource] / Nanny Fröman and Per Olof Fröman. - Cambridge : Cambridge University Press, c2003 - 1 online resource
Includes bibliographical references (p. 205-208) and indexes.
9780521812092 9780511020506 (electronic bk.)
WKB approximation.
Wave equation.
QC20.7.W53 / F77 2003