Bulletin of the Polish Academy of Sciences. Mathematics > 2005 > 53 > 2 > 221-238
Source
Identifiers
journal ISSN : | 0239-7269 |
DOI | 10.4064/ba53-2-10 |
Bulletin of the Polish Academy of Sciences. Mathematics > 2005 > 53 > 2 > 221-238
journal ISSN : | 0239-7269 |
DOI | 10.4064/ba53-2-10 |