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@article{ELMA_1972__27_141045, author = {J.D. Dunitz and J. Waser}, title = {The {Planarity} of the {Equilateral,} {Isogonal} {Pentagon.}}, journal = {Elemente der Mathematik}, pages = {25--32}, publisher = {mathdoc}, volume = {27}, year = {1972}, zbl = {0236.50003}, url = {http://geodesic.mathdoc.fr/item/ELMA_1972__27_141045/} }
J.D. Dunitz; J. Waser. The Planarity of the Equilateral, Isogonal Pentagon.. Elemente der Mathematik, Tome 27 (1972), pp. 25-32. http://geodesic.mathdoc.fr/item/ELMA_1972__27_141045/