Conference on Operator Theory Timiosoara and Herculane, Romania, & Apostol, C. (1982). Invariant subspaces and other topics: 6th International Conference on Operator Theory, Timiosoara and Herculane, Romania, June1-11, 1981. Birkhäuser Verlag.
Παραπομπή σε μορφή Chicago (17η εκδ.)Conference on Operator Theory Timiosoara and Herculane, Romania, και C. Apostol. Invariant Subspaces and Other Topics: 6th International Conference on Operator Theory, Timiosoara and Herculane, Romania, June1-11, 1981. Basel ; Boston: Birkhäuser Verlag, 1982.
Παραπομπή σε μορφή MLA (9th εκδ.)Conference on Operator Theory Timiosoara and Herculane, Romania, και C. Apostol. Invariant Subspaces and Other Topics: 6th International Conference on Operator Theory, Timiosoara and Herculane, Romania, June1-11, 1981. Birkhäuser Verlag, 1982.