TY - JOUR AU - Gozdalska, Krystyna TI - On affine planes non-extensible to Laguerre planes and some related problems JO - Mathematica Bohemica PY - 1991 SP - 2 EP - 11 VL - 116 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.1991.126197/ DO - 10.21136/MB.1991.126197 LA - en ID - 10_21136_MB_1991_126197 ER -