@article{10_21136_AM_1981_103894,
     author = {Alda, V\'aclav},
     title = {On $0-1$ measure for projectors. {II}},
     journal = {Applications of Mathematics},
     pages = {57--58},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1981},
     doi = {10.21136/AM.1981.103894},
     mrnumber = {0602402},
     zbl = {0459.28020},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1981.103894/}
}