@article{MAN_1993__296_4_165103,
     author = {J\'anos Koll\'ar},
     title = {Effective base point freeness.},
     journal = {Mathematische Annalen},
     pages = {595--606},
     publisher = {mathdoc},
     volume = {296},
     number = {4},
     year = {1993},
     zbl = {0818.14002},
     url = {http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165103/}
}