Annales UMCS, Mathematica
Annales UMCS, Mathematica > 2011 > 65 > 1 > 97-108
Annales UMCS, Mathematica > 2011 > 65 > 1 > 11-19
Annales UMCS, Mathematica > 2011 > 65 > 1 > 87-96
Annales UMCS, Mathematica > 2011 > 65 > 1 > 21-31
Annales UMCS, Mathematica > 2011 > 65 > 1 > 69-85
Annales UMCS, Mathematica > 2011 > 65 > 1 > 49-67
Annales UMCS, Mathematica > 2011 > 65 > 1 > 33-48
Annales UMCS, Mathematica > 2011 > 65 > 1 > 1-9