@article{10_4064_sm_102_2_121_144,
     author = {S\'ebastien Ferenczi},
     title = {Rank and spectral multiplicity},
     journal = {Studia Mathematica},
     pages = {121--144},
     publisher = {mathdoc},
     volume = {102},
     number = {2},
     year = {1992},
     doi = {10.4064/sm-102-2-121-144},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-102-2-121-144/}
}