@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/}
}