%0 Journal Article %A Jill C.D.S. Yaqub %T On Planes of Lenz-Barlotti Class I 6 and Planes of Lenz Class III. %J Mathematische Zeitschrift %D 1972 %P 109-136 %V 129 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1972__129_171824/ %F MZ_1972__129_171824