@article{02104395, title = {Combinatorial Miller-Morita-Mumford classes and Witten cycles.}, journal = {Geometry \& Topology}, volume = {8}, year = {2004}, pages = {473-520}, doi = {10.2140/agt.2004.4.473}, zbl = {1072.57013}, language = {en}, url = {http://dml.mathdoc.fr/item/02104395} }
Igusa, Kiyoshi. Combinatorial Miller-Morita-Mumford classes and Witten cycles.. Geometry & Topology, Tome 8 (2004) pp. 473-520. doi : 10.2140/agt.2004.4.473. http://gdmltest.u-ga.fr/item/02104395/