@article{SEMR_2006_3_a16,
     author = {Jianhua Shen and Ying Ge and Zhihong Ge},
     title = {A~note on weakly hereditarily closure-preserving families},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {253--256},
     publisher = {mathdoc},
     volume = {3},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2006_3_a16/}
}