@article{CM_1973__26_3_233_0,
     author = {Dijksma, A. and de Snoo, H. S. V.},
     title = {Symmetric subspaces related to certain eigenvalue problems},
     journal = {Compositio Mathematica},
     pages = {233--247},
     publisher = {Noordhoff International Publishing},
     volume = {26},
     number = {3},
     year = {1973},
     mrnumber = {344928},
     zbl = {0265.47022},
     language = {en},
     url = {http://www.numdam.org/item/CM_1973__26_3_233_0/}
}