@article{MZ_1996__222_3_174894,
     author = {A.J. Tromba},
     title = {Dirchlet's energy on {Teichm\"uller's} moduli space and the {Nielsen} realization problem.},
     journal = {Mathematische Zeitschrift},
     pages = {451--464},
     publisher = {mathdoc},
     volume = {222},
     number = {3},
     year = {1996},
     url = {http://geodesic.mathdoc.fr/item/MZ_1996__222_3_174894/}
}