@article{GDZPPN002113414, title = {Towards the Hanna Neumann conjecture using Dicks's method.}, journal = {Inventiones mathematicae}, volume = {123}, year = {1996}, pages = {95-104}, zbl = {0848.20019}, url = {http://dml.mathdoc.fr/item/GDZPPN002113414} }
Tardos, Gábor. Towards the Hanna Neumann conjecture using Dicks's method.. Inventiones mathematicae, Tome 123 (1996) pp. 95-104. http://gdmltest.u-ga.fr/item/GDZPPN002113414/