@article{10_4064_cm_17_1_111_121,
     author = {B. Rokowska},
     title = {Some new constructions of 4-tuple systems},
     journal = {Colloquium Mathematicum},
     pages = {111--121},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1967},
     doi = {10.4064/cm-17-1-111-121},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-17-1-111-121/}
}