Algorithm AS 243: Cumulative Distribution Function of the Non-Central t Distribution
Russell V. Lenth · Journal of the Royal Statistical Society Series C (Applied Statistics) · 1989
Russell V. Lenth, Algorithm AS 243: Cumulative Distribution Function of the Non-Central t Distribution, Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 38, No. 1 (1989), pp. 185-189