The programNereiswas developed by Syspertec using the languageXiPlus.N. JussienV. VergerY. L'HospitalierB. AugereauP. Gilletcanadian journal of zoology
doi:10.1107/S0021889880012654P. DervinM. PernotR. PenelleInternational Union of Crystallography (IUCr)Journal of Applied Crystallography