%0 Journal Article %A Mandan, Sahib Ram %T $5$ types of configurations of $9$ flexes and $27$ sextactic points of a cubic %J Časopis pro pěstování matematiky %D 1981 %P 354-356 %V 106 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1981.108491/ %R 10.21136/CPM.1981.108491 %G en %F 10_21136_CPM_1981_108491