@article{10_4153_CMB_1974_135_2, author = {Faierman, M.}, title = {A {Note} on {Klein{\textquoteright}s} {Oscillation} {Theorem} for {Periodic} {Boundary} {Conditions}}, journal = {Canadian mathematical bulletin}, pages = {749--755}, year = {1975}, volume = {17}, number = {5}, doi = {10.4153/CMB-1974-135-2}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-135-2/} }