@article{10_4064_cm_16_1_91_92,
     author = {Joseph L. Walsh},
     title = {An extension of the generalized {Bernstein} lemma},
     journal = {Colloquium Mathematicum},
     pages = {91--92},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1967},
     doi = {10.4064/cm-16-1-91-92},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-16-1-91-92/}
}