@article{CMJ_2006__56_3_a19,
     author = {Li, Zhaowen},
     title = {On weak-open $\pi$-images of metric spaces},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1011--1018},
     publisher = {mathdoc},
     volume = {56},
     number = {3},
     year = {2006},
     mrnumber = {2261673},
     zbl = {1164.54365},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/CMJ_2006__56_3_a19/}
}