# Search results

Open Mathematics > 2017 > 15 > 1 > 233-237

Concrete Operators > 2017 > 4 > 1 > 1-6

Annales UMCS, Mathematica > 2014 > 68 > 2

Open Mathematics > 2015 > 13 > 1

Open Mathematics > 2015 > 13 > 1

Annales UMCS, Mathematica > 2013 > 67 > 2 > 53-58

Annales UMCS, Mathematica > 2011 > 65 > 1 > 97-108

Annales UMCS, Mathematica > 2010 > 64 > 1 > 1-16

Annales UMCS, Mathematica > 2010 > 64 > 2 > 1-14

Annales Polonici Mathematici > 1997 > 66 > 1 > 37-42

Annales Polonici Mathematici > 1994-1995 > 60 > 2 > 159-162

Annales Polonici Mathematici > 1992 > 57 > 2 > 149-155

Rozprawy Matematyczne