@article{TRSPY_1984_163_a28,
     author = {B. Nagy},
     title = {On {Boolean} algebras of projections and prespectral operators},
     journal = {Informatics and Automation},
     pages = {187--190},
     publisher = {mathdoc},
     volume = {163},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1984_163_a28/}
}