By Aizpuru Antonio   Gutiérrez–Dávila Antonio   in Acta Mathematica Sinica

ISSN:1439-8516|20|5|949-960

Springer Publishing Company ‎(2004)‎

Access to resources Favorite 25.034191

By Aizpuru Antonio   Gutiérrez-Dávila Antonio   in Quaestiones Mathematicae

ISSN:1727-933X|30|3|381-389

Taylor & Francis Ltd‎(2007)‎

Access to resources Favorite 7.293816