LIBER IV. - AREAS Superficierum planarum inuestigans.
Christophori Clavii Bambergensis Societate Iesv Opervm Mathematicorvm T. 2, GDML_Books, (1611), p. 105 / Harvested from
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     title = {LIBER IV. -  AREAS Superficierum planarum inuestigans.},
     booktitle = {Christophori Clavii Bambergensis Societate Iesv Opervm Mathematicorvm T. 2},
     series = {GDML\_Books},
     year = {1611},
     pages = {105},
     url = {http://dml.mathdoc.fr/item/PPN309056772+dmdlog11}
}

 (éd.). LIBER IV. -  AREAS Superficierum planarum inuestigans., dans Christophori Clavii Bambergensis Societate Iesv Opervm Mathematicorvm T. 2, GDML_Books,  (1611), p. 105. http://gdmltest.u-ga.fr/item/PPN309056772+dmdlog11/