@article{AA_2019_31_2_a0,
     author = {J. M. Martell and D. Mitrea and I. Mitrea and M. Mitrea},
     title = {Fatou-type theorems and boundary value problems for elliptic systems in the upper half-space},
     journal = {Algebra i analiz},
     pages = {3--50},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_2019_31_2_a0/}
}