@article{MS2_1956__4_165627,
     author = {V.L.jr. KLEE},
     title = {Iteration of the },
     journal = {Mathematica Scandinavica},
     pages = {231--238},
     year = {1956},
     volume = {4},
     zbl = {0077.30703},
     url = {http://geodesic.mathdoc.fr/item/MS2_1956__4_165627/}
}