Standard Bruker program dstegp3s, v 1.8 2012/01/31
Stejskal-Tanner equation modified by Jerschow and Müller (link) using Bruker notations (input parameters):
\( I(g) = exp \Bigg(-D\gamma ^{2}g^{2} {(p30)} ^{2}\left(d20 - \dfrac{5}{3} p30 - d16 - 4p1 \right)\Bigg) \)