Opsomer, R.-J., Humblet, Y., Van Cangh, P., Aad, A. A., & Rossini, PM. (1989). [Motor Evoked-potentials From the Pelvic Floor - Preliminary Reports]. Annales d’Urologie, 23(6), 484-486. https://hdl.handle.net/2078.5/83748 (Original work published 1989)