@article{SJ_1960-1961__4__A3_0,
     author = {Brill, Dieter R.},
     title = {The initial value problem for closed universes},
     journal = {S\'eminaire de m\'ecanique analytique et de m\'ecanique c\'eleste},
     note = {talk:3},
     pages = {1--5},
     year = {1960-1961},
     publisher = {Secr\'etariat math\'ematique},
     volume = {4},
     zbl = {0105.41301},
     language = {en},
     url = {https://www.numdam.org/item/SJ_1960-1961__4__A3_0/}
}