@article{AM2_1971__7_136262,
     author = {JOHN LAMPERTI and GEORGE O'BRIEN},
     title = {On a {Functional} {Equation} {Related} to {Iteration} {(Short} {Communication)}},
     journal = {Aequationes mathematicae},
     pages = {322--322},
     publisher = {mathdoc},
     volume = {7},
     year = {1971},
     url = {http://geodesic.mathdoc.fr/item/AM2_1971__7_136262/}
}