well function

leaky aquifer function

additional error function integral

special function

function for slug tests

Well function for a well of finite diameter

special function

Bessel function of the first kind of the zero order

Bessel function of the first kind of the first order

Modified Bessel function of the first kind of the zero order

Modified Bessel function of the second kind of the zero order

Bessel function of the second kind of the zero order

Bessel function of the second kind of the first order

multiple error function integral