@article{AUCMP_1961__2_1_a0,
     author = {Sekanina, Zden\v{e}k},
     title = {Short-term changes in the colour index of the head and tail of the comet {Arend-Roland} 1956h},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {1--6},
     publisher = {mathdoc},
     volume = {02},
     number = {1},
     year = {1961},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1961__2_1_a0/}
}