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@article{MZ_1968__104_170930, author = {Wilhelm Stoll}, title = {The {Fiber} {Integral} is {Constant.}}, journal = {Mathematische Zeitschrift}, pages = {65--73}, publisher = {mathdoc}, volume = {104}, year = {1968}, zbl = {0164.09302}, url = {http://geodesic.mathdoc.fr/item/MZ_1968__104_170930/} }
Wilhelm Stoll. The Fiber Integral is Constant.. Mathematische Zeitschrift, Tome 104 (1968), pp. 65-73. http://geodesic.mathdoc.fr/item/MZ_1968__104_170930/