@article{CM_1994__91_3_305_0,
     author = {Valla, G.},
     title = {On the {Betti} numbers of perfect ideals},
     journal = {Compositio Mathematica},
     pages = {305--319},
     publisher = {Kluwer Academic Publishers},
     volume = {91},
     number = {3},
     year = {1994},
     mrnumber = {1273653},
     zbl = {0815.14033},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1994__91_3_305_0/}
}