@article{10_4171_ifb_85,
     author = {Francesco Maddalena and Sergio Solimini and Jean-Michel Morel},
     title = {A variational model of irrigation patterns},
     journal = {Interfaces and free boundaries},
     pages = {391--416},
     year = {2003},
     volume = {5},
     number = {4},
     doi = {10.4171/ifb/85},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/85/}
}