## Conical Function

Functions which can be expressed in terms of Legendre Functions of the First and Second Kinds. See Abramowitz and Stegun (1972, p. 337).

Abramowitz, M. and Stegun, C. A. (Eds.). Conical Functions.'' §8.12 in Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, p. 337, 1972.