@article{MAN_1980__252_163453,
     author = {Yujiro Kawamata},
     title = {Invariance of {Pluri-Genera} of a {Degenerating} {Family} of {Algebraic} {Surfaces.}},
     journal = {Mathematische Annalen},
     pages = {175--178},
     publisher = {mathdoc},
     volume = {252},
     year = {1980},
     zbl = {0447.14008},
     url = {http://geodesic.mathdoc.fr/item/MAN_1980__252_163453/}
}