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@article{MS2_1967__21_166023, author = {Asmus L. Schmidt}, title = {Farey {Triangles} and {Farey} {Quadrangels} in the {Complex} {Plane.}}, journal = {Mathematica Scandinavica}, pages = {241--295}, publisher = {mathdoc}, volume = {21}, year = {1967}, zbl = {0172.06601}, url = {http://geodesic.mathdoc.fr/item/MS2_1967__21_166023/} }
Asmus L. Schmidt. Farey Triangles and Farey Quadrangels in the Complex Plane.. Mathematica Scandinavica, Tome 21 (1967), pp. 241-295. http://geodesic.mathdoc.fr/item/MS2_1967__21_166023/