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2005 Oct 7: Jan Stochel (Jagiellonian Univ.); A local lifting theorem for subnormal operators

2007 Apr 13: Jan Stochel (Jagiellonian Univ.); Joint subnormality of $n$-tuples and $C_0$-semigroups of composition operators on $L^2$-spaces

2017 Apr 5: Jan Stochel(Jagiellonian Univ.); Exotic examples related to unbounded subnormality via theory of moments