Existence of a solution for the initial boundary value problem for a high order parabolic equation in an unbounded domain. Zaręba, Lech — 2006 Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica
The initial boundary value problem for the high order parabolic equation in unbounded domain. Zarȩba, Lech — 2004 Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica
Nonlocal problem for the hyperbolic system of differential equation of the first order. Zarȩba, Lech — 2001 Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica