@article{PA_2013_2_1_a3,
     author = {R. F. Shamoyan},
     title = {On some extremal problems in certain harmonic function spaces of several variables related to mixed norm spaces},
     journal = {Problemy analiza},
     pages = {43--58},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PA_2013_2_1_a3/}
}