TY - JOUR AU - Vanýsek, Vladimír TI - Life-time of $C_2$ and CN molecules and solid grains in cometary atmospheres JO - Acta Universitatis Carolinae. Mathematica et Physica PY - 1965 SP - 23 EP - 40 VL - 06 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AUCMP_1965__6_1_a1/ LA - en ID - AUCMP_1965__6_1_a1 ER -