Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1987__37_4_a1, author = {N\'an\'asiov\'a, O\v{l}ga}, title = {Ordering of observables and characterization of conditional expectation}, journal = {Mathematica slovaca}, pages = {323--340}, publisher = {mathdoc}, volume = {37}, number = {4}, year = {1987}, mrnumber = {916940}, zbl = {0642.03037}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1987__37_4_a1/} }
Nánásiová, Oľga. Ordering of observables and characterization of conditional expectation. Mathematica slovaca, Tome 37 (1987) no. 4, pp. 323-340. http://geodesic.mathdoc.fr/item/MASLO_1987__37_4_a1/