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@article{MOMA_1983__96_178151, author = {Bernhard Dietz}, title = {On the {Gaps} of the {Markoff} {Spectrum.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {265--268}, publisher = {mathdoc}, volume = {96}, year = {1983}, zbl = {0517.10021}, url = {http://geodesic.mathdoc.fr/item/MOMA_1983__96_178151/} }
Bernhard Dietz. On the Gaps of the Markoff Spectrum.. Monatshefte für Mathematik, Tome 96 (1983), pp. 265-268. http://geodesic.mathdoc.fr/item/MOMA_1983__96_178151/