@article{EJDE_1997__1997__a20,
     author = {Carlson, Robert},
     title = {Hill's equation for a homogeneous tree},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {1997},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_1997__1997__a20/}
}