@article{10_4064_fm_153_2_141_144,
     author = {Jind\v{r}ich Zpletal},
     title = {A classification of definable forcings on \ensuremath{\omega}1},
     journal = {Fundamenta Mathematicae},
     pages = {141--144},
     publisher = {mathdoc},
     volume = {153},
     number = {2},
     year = {1997},
     doi = {10.4064/fm-153-2-141-144},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-153-2-141-144/}
}