المؤلفون: Kozhukhov, S. F., Tveretin, A. S.

المصدر: Journal of Mathematical Sciences ; volume 154, issue 3, page 319-323 ; ISSN 1072-3374 1573-8795

الاتاحة: http://dx.doi.org/10.1007/s10958-008-9185-1
http://link.springer.com/content/pdf/10.1007/s10958-008-9185-1.pdf
http://link.springer.com/article/10.1007/s10958-008-9185-1/fulltext.html
http://link.springer.com/content/pdf/10.1007/s10958-008-9185-1