@article{PPN58477320X+DMDLOG_0038,
     title = {XXIX. Solutio problematis, quo duo quaeruntur numeri, quorum productum tam summa, quam differentia eorum, sive auctum sive minutum, fiat quadratum.},
     booktitle = {Insunt plura inedita, tractatus de numerorum doctrina capita XVI aliaque Tomus prior},
     series = {GDML\_Books},
     publisher = {Acad. Scient.},
     address = {Petropoli},
     year = {1849},
     pages = {414},
     url = {http://dml.mathdoc.fr/item/PPN58477320X+DMDLOG_0038}
}