On integrability of discrete representations of Lie algebra u ( p , q ) J. Mickelsson; J. Niederle — 1973 Annales de l'I.H.P. Physique théorique
Conformally covariant field equations J. Mickelsson; J. Niederle — 1975 Annales de l'I.H.P. Physique théorique
Reduction of the most degenerate unitary irreductible representations of S O 0 ( m , n ) when restricted to a non-compact rotation subgroup N. Limić; J. Niederle — 1968 Annales de l'I.H.P. Physique théorique