@article{10_4153_CJM_1998_026_9,
     author = {Barlow, Martin T.},
     title = {On the {Liouville} {Property} for {Divergence} {Form} {Operators}},
     journal = {Canadian journal of mathematics},
     pages = {487--496},
     year = {1998},
     volume = {50},
     number = {3},
     doi = {10.4153/CJM-1998-026-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1998-026-9/}
}