@article{MSH_1997__137__11_0,
     author = {Frank, Ove},
     title = {Composition and structure of social networks},
     journal = {Math\'ematiques informatique et sciences humaines},
     pages = {11--23},
     publisher = {Ecole des hautes-\'etudes en sciences sociales},
     volume = {137},
     year = {1997},
     mrnumber = {1454783},
     zbl = {0885.92042},
     language = {en},
     url = {http://www.numdam.org/item/MSH_1997__137__11_0/}
}