@article{10_4064_sm_17_3_267_283,
     author = {K. Urbanik},
     title = {The {Conditional} expectations and the ergodic theorem for strictly stationary generalized stochastic processes},
     journal = {Studia Mathematica},
     pages = {267--283},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {1958},
     doi = {10.4064/sm-17-3-267-283},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-17-3-267-283/}
}