RT CW A1 Longomontanus, Christen S첩rensen T1 Cyclometria ex Lunulis reciproc챔 demonstrata, unde tam Are챈 quam Perimetri circuli exacta dimensio, & in numeros diductio seqvuta est,hactenus ab omnibus Mathematicis unice desideratus ... inventore Christiano S. Longomontano ..