@article{JRAM_1984__351_152652,
     author = {Carl C. Cowen and John J. Long},
     title = {Some subnormal {Toeplitz} operators.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {216--220},
     publisher = {mathdoc},
     volume = {351},
     year = {1984},
     zbl = {0532.47019},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1984__351_152652/}
}