Fröman, N., & Fröman, P. O. (2002). Physical Problems Solved by the Phase-Integral Method. Cambridge University Press.
Chicago Edition CitationFröman, Nanny, and Per Olof Fröman. Physical Problems Solved by the Phase-Integral Method. Cambridge: Cambridge University Press, 2002.
MLA Edition CitationFröman, Nanny, and Per Olof Fröman. Physical Problems Solved by the Phase-Integral Method. Cambridge University Press, 2002.
Warning: These citations may not always be 100% accurate.