@article{10_4064_cm_38_1_165_167,
     author = {B. Rokowska},
     title = {A new construction of the block systems $B(4,1,25)$ and $B(4,1,28)$},
     journal = {Colloquium Mathematicum},
     pages = {165--167},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {1977},
     doi = {10.4064/cm-38-1-165-167},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-38-1-165-167/}
}