%0 Journal Article %A Sekanina, Zdeněk %T Form and enlargement of the Earth's shadow during the lunar eclipses of August 26, 1961, July 6, 1963 and June 24-25, 1964 %J Acta Universitatis Carolinae. Mathematica et Physica %D 1965 %P 1-20 %V 6 %N 2 %U http://geodesic.mathdoc.fr/item/AUCMP_1965_6_2_a0/ %G en %F AUCMP_1965_6_2_a0