@article{10_4064_sm_129_2_179_183,
     author = {B. Kami\'nski and  },
     title = {On extremal and perfect \ensuremath{\sigma}-algebras for flows},
     journal = {Studia Mathematica},
     pages = {179--183},
     publisher = {mathdoc},
     volume = {129},
     number = {2},
     year = {1998},
     doi = {10.4064/sm-129-2-179-183},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-129-2-179-183/}
}