@article{AMLG_1975__17_137917,
     author = {Walter Felscher},
     title = {On interpolation when function symbols are present.},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {145--158},
     publisher = {mathdoc},
     volume = {17},
     year = {1975},
     zbl = {0339.02011},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1975__17_137917/}
}