Journal of Mathematical SciencesSeptember 1995, Volume 76, Issue 4, pp 2441–2451Naum Il'ich AkhiezerArticle 1 Shares 58 Downloads PreviewUnable to display preview. Download preview PDF.Unable to display preview. Download preview PDF.Copyright information© Plenum Publishing Corporation 1995 Personalised recommendations Export citation .RIS Papers Reference Manager RefWorks Zotero .ENW EndNote .BIB BibTeX JabRef Mendeley Share article Email Facebook Twitter LinkedIn Buy options