TY - JOUR AU - Michalska, M. TI - A sufficient condition for the convexity of the area of an isoptic curve of an oval JO - Rendiconti del Seminario Matematico della Università di Padova PY - 2003 SP - 161 EP - 169 VL - 110 PB - Seminario Matematico of the University of Padua UR - http://www.numdam.org/item/RSMUP_2003__110__161_0/ LA - en ID - RSMUP_2003__110__161_0 ER -