@article{MSH_1988__104__19_0,
     author = {Frank, Ove},
     title = {Random sampling and social networks. {A} survey of various approaches},
     journal = {Math\'ematiques informatique et sciences humaines},
     pages = {19--33},
     publisher = {Ecole des hautes-\'etudes en sciences sociales},
     volume = {104},
     year = {1988},
     mrnumber = {989254},
     zbl = {0682.62088},
     language = {en},
     url = {http://www.numdam.org/item/MSH_1988__104__19_0/}
}