@article{1029001422,
author = {Carswell, J. G. W. and Schubert, C. F.},
title = {Lifting of operators that commute with shifts.},
journal = {Michigan Math. J.},
volume = {21},
number = {3},
year = {1975},
pages = { 65-69},
language = {en},
url = {http://dml.mathdoc.fr/item/1029001422}
}
Carswell, J. G. W.; Schubert, C. F. Lifting of operators that commute with shifts.. Michigan Math. J., Tome 21 (1975) no. 3, pp. 65-69. http://gdmltest.u-ga.fr/item/1029001422/