@article{JRAM_1975__277_151634,
     author = {G.O. Okikiolu},
     title = {Interpolation theorems for operators relatively bounded by differential-type transformations.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {178--192},
     publisher = {mathdoc},
     volume = {277},
     year = {1975},
     zbl = {0304.47039},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1975__277_151634/}
}