@article{M2AN_2017__51_1_321_0,
     author = {Bachmayr, Markus and Cohen, Albert and Migliorati, Giovanni},
     title = {Sparse polynomial approximation of parametric elliptic {PDEs.} {Part} {I:} affine coefficients},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {321--339},
     publisher = {EDP-Sciences},
     volume = {51},
     number = {1},
     year = {2017},
     doi = {10.1051/m2an/2016045},
     mrnumber = {3601010},
     zbl = {1365.41003},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/m2an/2016045/}
}