// See "The Asymptotic Expansion of the Incomplete Gamma Functions"
// N. M. Temme.
// Siam J. Math Anal. Vol 10 No 4, July 1979, p757.
-// Coeffient calculation is described from Eq 3.8 (p762) onwards.
+// Coefficient calculation is described from Eq 3.8 (p762) onwards.
//
//