Vigesimum Problema. Quantum elevatur polus borealis supra circulum positionis stellae cuinsuis, aut alicuius signati puncti in coelo innestigare.
Regiomontani Tabvla Sinvvm, per singula minuta extensa, vniuersam sphaericorum triangulorum scientiam complectens [1], GDML_Books, (1584), p. 13 / Harvested from
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@article{PPN555509575+dmdlog25,
     title = {Vigesimum Problema. Quantum elevatur polus borealis supra circulum positionis stellae cuinsuis, aut alicuius signati puncti in coelo innestigare.},
     booktitle = {Regiomontani Tabvla Sinvvm, per singula minuta extensa, vniuersam sphaericorum triangulorum scientiam complectens [1]},
     series = {GDML\_Books},
     publisher = {Welack},
     address = {Witebergae},
     year = {1584},
     pages = {13},
     url = {http://dml.mathdoc.fr/item/PPN555509575+dmdlog25}
}

 (éd.). Vigesimum Problema. Quantum elevatur polus borealis supra circulum positionis stellae cuinsuis, aut alicuius signati puncti in coelo innestigare., dans Regiomontani Tabvla Sinvvm, per singula minuta extensa, vniuersam sphaericorum triangulorum scientiam complectens [1], GDML_Books,  (1584), p. 13. http://gdmltest.u-ga.fr/item/PPN555509575+dmdlog25/