@misc{Roomen_Adriaan_van_(1561-1615)_Ideæ,
 author={Roomen, Adriaan van (1561-1615)},
 howpublished={online},
 publisher={Apud Ioannem Keerbergium},
 language={lat},
 type={stary druk},
 title={Ideæ Mathematicæ Pars Prima, Sive Methodvs Polygonorvm, Qva Laterum, perimetrorum & arearum cujuscunque polygoni investigandorum ratio exactissima & certissima; una cum circuli quadratura continentur},
 keywords={16 w., wydawnictwa przed 1800, stare druki, matematyka, Clavius, Christophorus (1537?-1612). Adr. ded.},
}