By Kuchment Peter   Lvin Sergey   in American Mathematical Monthly

ISSN:1930-0972|120|7|609-621

Mathematical Association of America‎(2013)‎

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By Kuchment Peter   Post Olaf   in Communications in Mathematical Physics

ISSN:0010-3616|275|3|805-826

Springer Publishing Company ‎(2007)‎

Access to resources Favorite 14.254953

By Kuchment Peter   Vainberg Boris   in Communications in Mathematical Physics

ISSN:0010-3616|268|3|673-686

Springer Publishing Company ‎(2006)‎

Access to resources Favorite 14.254953