@article{GDZPPN002445514, title = {On the invariants of base changes of pencils of curves, II.}, journal = {Mathematische Zeitschrift}, volume = {221}, year = {1996}, pages = {655-676}, zbl = {0864.14016}, url = {http://dml.mathdoc.fr/item/GDZPPN002445514} }
Tan, Sheng-Li. On the invariants of base changes of pencils of curves, II.. Mathematische Zeitschrift, Tome 221 (1996) pp. 655-676. http://gdmltest.u-ga.fr/item/GDZPPN002445514/