@article{JRAM_1996__480_153869,
     author = {Atsushi Moriwaki},
     title = {A sharp slope inequality for general stable fibrations of curves.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {177--196},
     publisher = {mathdoc},
     volume = {480},
     year = {1996},
     zbl = {0861.14027},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1996__480_153869/}
}