@article{AIF_1994__44_1_65_0,
     author = {Gardiner, Stephen J.},
     title = {Superharmonic extension and harmonic approximation},
     journal = {Annales de l'Institut Fourier},
     pages = {65--91},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {44},
     number = {1},
     year = {1994},
     doi = {10.5802/aif.1389},
     mrnumber = {95a:31006},
     zbl = {0795.31004},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.1389/}
}