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@article{MS2_1986__58_166971, author = {Johan P. Hansen and Simon Vydral}, title = {Double points of compositions of projections.}, journal = {Mathematica Scandinavica}, pages = {119--124}, publisher = {mathdoc}, volume = {58}, year = {1986}, zbl = {0604.14008}, url = {http://geodesic.mathdoc.fr/item/MS2_1986__58_166971/} }
Johan P. Hansen; Simon Vydral. Double points of compositions of projections.. Mathematica Scandinavica, Tome 58 (1986), pp. 119-124. http://geodesic.mathdoc.fr/item/MS2_1986__58_166971/