@article{TRSPY_2009_265_a18,
     author = {A. Radyna and Ya. Radyna and Ya. Radyno},
     title = {Unbounded {Transforms} and {Approximation} of {Functions} over $p$-adic {Fields}},
     journal = {Informatics and Automation},
     pages = {220--228},
     publisher = {mathdoc},
     volume = {265},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2009_265_a18/}
}