Re: prolate / oblate spheroidal coordinates
The following are what I found in Arfken (3rd Ed) page 117:
Morse, PM and Feshbach, H, "Methods of THeoretical Physics", NY:McGraw
Hill
(1953). Chapter 5 inlcudes a description of several different coordinate s
systems. Note carefully that M&F are not above using left-handed coor-
dinate systems even for cartesian coordinates. ... 11 additional fascinating
but seldom encountered orthogonal coordinate systems are discussed in the
second (1970) edition of the above book.