@article{AUCMP_1972__13_2_a7,
     author = {Bou\v{s}ka, J. and Van\'ysek, V.},
     title = {A note on the cometary nucleus},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {73--84},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1972__13_2_a7/}
}