@article{INTF_1996_74_a7,
     author = {Th. Peternell},
     title = {Chapter~7. {Modifications}},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya},
     pages = {365--408},
     year = {1996},
     volume = {74},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTF_1996_74_a7/}
}