A theoretical study of the structure of big endothelin MC Menzian, M Cocchi, PG De Benedetti, RG Gilbert, WG Richards, M Zamai and VR Caiolfa J. Chim. Phys., 88 (1991) 2687-2694 Published online: 29 May 2017 DOI: 10.1051/jcp/1991882687