Parabolic subgroups with Abelian unipotent radical. R. Richardson; G. Röhrle; R. Steinberg — 1992 Inventiones mathematicae
Commuting varieties of semisimple Lie algebras and algebraic groups R. W. Richardson — 1979 Compositio Mathematica
Modelling the interactions of mixtures of organophosphorus insecticides with cholinesterase. Carr, Russell L.; Chambers, Howard W.; Chambers, Janice E.; Oppenheimer, Seth F.; Richardson, Jason R. — 2003 Electronic Journal of Differential Equations (EJDE) [electronic only]