@misc{SSS_1976-1977____A1_0,
     title = {Introduction},
     journal = {S\'eminaire sur les singularit\'es des surfaces},
     eid = {1},
     pages = {0--0},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1976-1977},
     language = {fr},
     url = {http://www.numdam.org/item/SSS_1976-1977____A1_0/}
}