@article{10_4153_CJM_2007_033_7,
     author = {Gil, Juan B. and Krainer, Thomas and Mendoza, Gerardo A.},
     title = {Geometry and {Spectra} of {Closed} {Extensions} of {Elliptic} {Cone} {Operators}},
     journal = {Canadian journal of mathematics},
     pages = {742--794},
     year = {2007},
     volume = {59},
     number = {4},
     doi = {10.4153/CJM-2007-033-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2007-033-7/}
}