@article{10_21136_MB_1994_126082,
     author = {Ad\'amek, Ji\v{r}{\'\i} and Kat\v{e}tov, Miroslav},
     title = {V\v{e}ra {Trnkov\'a's} unbelievable 60},
     journal = {Mathematica Bohemica},
     pages = {216--224},
     publisher = {mathdoc},
     volume = {119},
     number = {2},
     year = {1994},
     doi = {10.21136/MB.1994.126082},
     mrnumber = {1293252},
     zbl = {0803.01033},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1994.126082/}
}