@article{MZ_1993__213_1_174521,
     author = {Dieter Wolke and Tao Zhan},
     title = {On the distribution of integers with a fixed number of prime factors.},
     journal = {Mathematische Zeitschrift},
     pages = {133--144},
     publisher = {mathdoc},
     volume = {213},
     number = {1},
     year = {1993},
     zbl = {0788.11040},
     url = {http://geodesic.mathdoc.fr/item/MZ_1993__213_1_174521/}
}