@article{10_4153_CMB_1977_065_4,
     author = {Bryan, Robert Neff},
     title = {Adjoint {Interior-Point} {Boundary} {Conditions} for {Linear} {Differential} {Operators}},
     journal = {Canadian mathematical bulletin},
     pages = {447--450},
     year = {1977},
     volume = {20},
     number = {4},
     doi = {10.4153/CMB-1977-065-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1977-065-4/}
}