Automation of a hydroelectric power station using variable-structure control systems. - J. Erschler; François Roubellat; J. P. Vernhes (Autom., 1974)

Technical Note - Finding Some Essential Characteristics of the Feasible Solutions for a Scheduling Problem. - Jacques Erschler; François Roubellat; J. P. Vernhes (Oper. Res., 1976)