Search results for: Zbigniew Szydełko
Open Mathematics > 2012 > 10 > 3 > 1172-1184
Central European Journal of Mathematics > 2012 > 10 > 3 > 1172-1184
Open Mathematics > 2012 > 10 > 3 > 1172-1184
Central European Journal of Mathematics > 2012 > 10 > 3 > 1172-1184