Michal Dallos, Hans Lischka, Elizete Ventura Do Monte, Michael Hirsch, Wolfgang Quapp. Determination of energy minima and saddle points using multireference configuration interaction methods in combination with reduced gradient following: The S0 surface of H2CO and the T1 and T2 surfaces of acetylene. Journal of Computational Chemistry, 23(5):576-583, 2002. [doi]
Abstract is missing.