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@article{MM2_1998__95_3_156370, author = {U. Bunke and H. Koch}, title = {The ...-form and a generalized {Maslov} index.}, journal = {Manuscripta mathematica}, pages = {189--212}, publisher = {mathdoc}, volume = {95}, number = {3}, year = {1998}, zbl = {0920.58045}, url = {http://geodesic.mathdoc.fr/item/MM2_1998__95_3_156370/} }
U. Bunke; H. Koch. The ...-form and a generalized Maslov index.. Manuscripta mathematica, Tome 95 (1998) no. 3, pp. 189-212. http://geodesic.mathdoc.fr/item/MM2_1998__95_3_156370/