Grasberger, Bruce L; Clore, G.Marius; Gronenborn, Angela M (1994). "High-resolution structure of Ascaris trypsin inhibitor in solution: direct evidence for a pH-induced conformational transition in the reactive site". Structure2 (7): 669–678. doi:10.1016/s0969-2126(00)00067-8. பப்மெட்:7922043.
Grasberger, Bruce L; Clore, G.Marius; Gronenborn, Angela M (1994). "High-resolution structure of Ascaris trypsin inhibitor in solution: direct evidence for a pH-induced conformational transition in the reactive site". Structure2 (7): 669–678. doi:10.1016/s0969-2126(00)00067-8. பப்மெட்:7922043.