@article{DAN_1961_139_5_a9,
     author = {A. N. Sharkovskii},
     title = {The reducibility of a continuous function of a real variable and the structure of the stationary points 
},
     journal = {Doklady Akademii Nauk},
     pages = {1067--1070},
     publisher = {mathdoc},
     volume = {139},
     number = {5},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_5_a9/}
}