@article{M2AN_1997__31_4_435_0,
     author = {Delvos, Franz-J.},
     title = {Interpolation in harmonic {Hilbert} spaces},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {435--458},
     publisher = {Elsevier},
     volume = {31},
     number = {4},
     year = {1997},
     mrnumber = {1457455},
     zbl = {0877.41001},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1997__31_4_435_0/}
}