@article{MAN_1975__215_162708,
     author = {Michael R. Stein},
     title = {The {Schur} {Multipliers} of {Sp6(Z),Spin8(Z),Spin7(Z),andF4(Z).}},
     journal = {Mathematische Annalen},
     pages = {165--172},
     publisher = {mathdoc},
     volume = {215},
     year = {1975},
     zbl = {0291.20058},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__215_162708/}
}