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@article{MAN_1984__268_182913, author = {Jochen Br\"uning}, title = {Heat {Equation} {Asymptotics} for {Singular} {Sturm-Liouville} {Operators.}}, journal = {Mathematische Annalen}, pages = {173--196}, publisher = {mathdoc}, volume = {268}, year = {1984}, zbl = {0528.34020}, url = {http://geodesic.mathdoc.fr/item/MAN_1984__268_182913/} }
Jochen Brüning. Heat Equation Asymptotics for Singular Sturm-Liouville Operators.. Mathematische Annalen, Tome 268 (1984), pp. 173-196. http://geodesic.mathdoc.fr/item/MAN_1984__268_182913/