%0 Journal Article %A M. Z. Krzywoblocki %T On some mathematical aspects of an interplanetary flights (to Mars), Part III. Equations of motion %J Δελτίο της Ελληνικής Μαθηματικής Εταιρίας %D 1963 %P 12-49 %V 04 %N A %U http://geodesic.mathdoc.fr/item/DEME_1963_04_A_a1/ %G gr %F DEME_1963_04_A_a1