@article{10_4153_CMB_2006_015_5,
     author = {Taylor, Michael},
     title = {Scattering {Length} and the {Spectrum} of {{\textendash}\ensuremath{\Delta}} + {V}},
     journal = {Canadian mathematical bulletin},
     pages = {144--151},
     year = {2006},
     volume = {49},
     number = {1},
     doi = {10.4153/CMB-2006-015-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2006-015-5/}
}