@inbook{403730, title = {[Ob\'alka]}, booktitle = {Vektory v geometrii}, series = {GDML\_Books}, publisher = {Mlad\'a fronta}, address = {Praha}, year = {1971}, pages = {[i]-[ii]}, url = {http://dml.mathdoc.fr/item/403730} }
(éd.). [Obálka], dans Vektory v geometrii, GDML_Books, (1971), pp. [i]-[ii]. http://gdmltest.u-ga.fr/item/403730/