@article{CMUC_2014__55_4_a8,
     author = {Lin, Shou and Zhang, Jinhuang},
     title = {Mapping theorems on countable tightness and a question of {F.} {Siwiec}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {523--536},
     publisher = {mathdoc},
     volume = {55},
     number = {4},
     year = {2014},
     mrnumber = {3269014},
     zbl = {06391560},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2014__55_4_a8/}
}