@article{FAA_1981_15_4_a13,
     author = {M. Yu. Lyubich},
     title = {Entropy of analytic endomorphisms of the riemannian sphere},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {83--84},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1981_15_4_a13/}
}