# Search results

Open Mathematics > 2017 > 15 > 1 > 768-786

Concrete Operators > 2016 > 3 > 1 > 68-76

Open Mathematics > 2015 > 13 > 1

Open Mathematics > 2014 > 12 > 1 > 128-140

Open Mathematics > 2012 > 10 > 6 > 1969-1980

Open Mathematics > 2005 > 3 > 1 > 39-57

Annales Polonici Mathematici > 1999 > 71 > 1 > 39-46

Banach Center Publications > 1996 > 33 > 1 > 79-83

Annales Polonici Mathematici > 1996 > 63 > 2 > 137-154

Annales Polonici Mathematici > 1993 > 58 > 2 > 139-146

Annales Polonici Mathematici > 1992 > 57 > 3 > 269-281