Nouwen, N., Ranson, N., Saibil, H., Wolpensinger, B., Engel, A., Ghazi, A., & Pugsley, A. P. (1999). Secretin PulD: Association with pilot PulS, structure, and ion-conducting channel formation. The National Academy of Sciences.

Nouwen, Nico, Neil Ranson, Helen Saibil, Bettina Wolpensinger, Andreas Engel, Alexandre Ghazi, und Anthony P. Pugsley. Secretin PulD: Association With Pilot PulS, Structure, and Ion-conducting Channel Formation. The National Academy of Sciences, 1999.

Nouwen, Nico, et al. Secretin PulD: Association With Pilot PulS, Structure, and Ion-conducting Channel Formation. The National Academy of Sciences, 1999.