Mukherjee, AmiyaMahuya, Datta2014-02-112014-02-111998Mathematical Slovaca, v 48, no 4, p 411-421http://hdl.handle.net/10263/5777enEquivariant parametric homotopic principleTransversalityImmersionSubmersionPartial differential relationParametric homotopy principle of some partial differential relationsArticle