@article{TSG_1989-1990__8__27_0,
     author = {Arcostanzo, M.},
     title = {Le spectre marqu\'e des longueurs des surfaces \`a courbure n\'egative},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {27--36},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {8},
     year = {1989-1990},
     mrnumber = {1717281},
     zbl = {0765.53032},
     language = {fr},
     url = {http://archive.numdam.org/item/TSG_1989-1990__8__27_0/}
}