Media type: E-Article Title: On a property of the index of non-local elliptic problems Contributor: Kovaleva, O A imprint: Steklov Mathematical Institute, 1999 Published in: Russian Mathematical Surveys Language: Not determined DOI: 10.1070/rm1999v054n04abeh000189 ISSN: 0036-0279; 1468-4829 Keywords: General Mathematics Origination: Footnote: Access State: Open Access