@article{STUMA_1958__17_2_216913,
     author = {A. Bharucha-Reid},
     title = {Ergodic projections for semi-groups of periodic operators},
     journal = {Studia Mathematica},
     pages = {189},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1958},
     zbl = {0101.09504},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/STUMA_1958__17_2_216913/}
}