Vigesimum Tertium Problema. Oblatis duabus stellis aut duobus punctis coeli, poßint ne modo praedicto coniungi infra diem unum naturalem, perscrutari.
Regiomontani Tabvla Sinvvm, per singula minuta extensa, vniuersam sphaericorum triangulorum scientiam complectens [1], GDML_Books, (1584), p. 15 / Harvested from
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@article{PPN555509575+dmdlog28,
     title = {Vigesimum Tertium Problema. Oblatis duabus stellis aut duobus punctis coeli, po\ss int ne modo praedicto coniungi infra diem unum naturalem, perscrutari.},
     booktitle = {Regiomontani Tabvla Sinvvm, per singula minuta extensa, vniuersam sphaericorum triangulorum scientiam complectens [1]},
     series = {GDML\_Books},
     publisher = {Welack},
     address = {Witebergae},
     year = {1584},
     pages = {15},
     url = {http://dml.mathdoc.fr/item/PPN555509575+dmdlog28}
}

 (éd.). Vigesimum Tertium Problema. Oblatis duabus stellis aut duobus punctis coeli, poßint ne modo praedicto coniungi infra diem unum naturalem, perscrutari., dans Regiomontani Tabvla Sinvvm, per singula minuta extensa, vniuersam sphaericorum triangulorum scientiam complectens [1], GDML_Books,  (1584), p. 15. http://gdmltest.u-ga.fr/item/PPN555509575+dmdlog28/