# Search results

Open Mathematics > 2017 > 15 > 1 > 1509-1516

Annales Mathematicae Silesianae > 2016 > 30 > 1 > 39-62

Open Mathematics > 2016 > 14 > 1 > 221-228

Concrete Operators > 2015 > 2 > 1

Annales UMCS, Mathematica > 2013 > 67 > 2 > 65-78

Open Mathematics > 2010 > 8 > 5 > 937-949

Open Mathematics > 2009 > 7 > 4 > 787-803

Annales UMCS, Mathematica > 2009 > 63 > 1 > 1-16

Studia Mathematica > 1998 > 129 > 3 > 265-284

Annales Polonici Mathematici > 1994-1995 > 60 > 3 > 221-230

Studia Mathematica > 1994 > 110 > 3 > 271-282

Annales Polonici Mathematici > 1993 > 58 > 3 > 275-285

Annales Polonici Mathematici > 1993 > 58 > 1 > 47-51

Annales Polonici Mathematici > 1992 > 57 > 2 > 165-175

Annales Polonici Mathematici > 1991-1992 > 56 > 1 > 87-92