@article{CM_1975__30_3_221_0,
     author = {Altman, Allen B. and Kleiman, Steven L.},
     title = {A divisorial cycle acquiring an embedded component under a flat specialization},
     journal = {Compositio Mathematica},
     pages = {221--233},
     publisher = {Noordhoff International Publishing},
     volume = {30},
     number = {3},
     year = {1975},
     mrnumber = {382270},
     zbl = {0319.14001},
     language = {en},
     url = {http://www.numdam.org/item/CM_1975__30_3_221_0/}
}