@article{GMJ_1998__5_5_48174,
     author = {Chantladze, T. and Kandelaki, N.},
     title = {On a class of covariance operators.},
     journal = {Georgian mathematical journal},
     pages = {415--424},
     year = {1998},
     volume = {5},
     number = {5},
     zbl = {0916.60006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1998__5_5_48174/}
}