@article{JRAM_1980__315_152223,
     author = {T.W. Cusick},
     title = {Best diophantine approximations for ternary linear forms.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {40--52},
     publisher = {mathdoc},
     volume = {315},
     year = {1980},
     zbl = {0434.10021},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1980__315_152223/}
}