@article{PPN584774036+DMDLOG_0021, title = {2. De numeris amicabilibus.}, booktitle = {Insunt plura inedita, tractatus de numerorum doctrina capita XVI aliaque Tomus posterior}, series = {GDML\_Books}, publisher = {Acad. Scient.}, address = {Petropoli}, year = {1849}, pages = {637}, url = {http://dml.mathdoc.fr/item/PPN584774036+DMDLOG_0021} }
(éd.). 2. De numeris amicabilibus., dans Insunt plura inedita, tractatus de numerorum doctrina capita XVI aliaque Tomus posterior, GDML_Books, (1849), p. 637. http://gdmltest.u-ga.fr/item/PPN584774036+DMDLOG_0021/