LIBER VI. - In quo de Geodaesia. & de figuris augendis, minuendisque in data proportione: Item de duarum mediarum proportionalium inter duas datas rectas inuentione: Ac denique de radicum extratione agitur.
Christophori Clavii Bambergensis Societate Iesv Opervm Mathematicorvm T. 2, GDML_Books, (1611), p. 147 / Harvested from
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     title = {LIBER VI. -  In quo de Geodaesia. \& de figuris augendis, minuendisque in data proportione: Item de duarum mediarum proportionalium inter duas datas rectas inuentione: Ac denique de radicum extratione agitur.},
     booktitle = {Christophori Clavii Bambergensis Societate Iesv Opervm Mathematicorvm T. 2},
     series = {GDML\_Books},
     year = {1611},
     pages = {147},
     url = {http://dml.mathdoc.fr/item/PPN309056772+dmdlog13}
}

 (éd.). LIBER VI. -  In quo de Geodaesia. & de figuris augendis, minuendisque in data proportione: Item de duarum mediarum proportionalium inter duas datas rectas inuentione: Ac denique de radicum extratione agitur., dans Christophori Clavii Bambergensis Societate Iesv Opervm Mathematicorvm T. 2, GDML_Books,  (1611), p. 147. http://gdmltest.u-ga.fr/item/PPN309056772+dmdlog13/