@article{10_4153_CJM_1968_065_3,
     author = {Lo, C.-Y.},
     title = {A {Class} of {Polynomials} in {Self-Adjoint} {Operators} in {Spaces} with an {Indefinite} {Metric}},
     journal = {Canadian journal of mathematics},
     pages = {673--678},
     year = {1968},
     volume = {20},
     number = {1},
     doi = {10.4153/CJM-1968-065-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-065-3/}
}