@article{10_14708_ma_v11i22_1589,
     author = {Krystyna Zi\k{e}tak},
     title = {Double {Chebyshev} series for hypergeometric functions of two variables},
     journal = {Mathematica Applicanda},
     pages = { 199--213},
     year = {1983},
     volume = {11},
     number = {22},
     doi = {10.14708/ma.v11i22.1589},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v11i22.1589/}
}