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Efremova L.S., “Small Perturbations of Smooth Skew Products and Sharkovsky'S Theorem”, J. Differ. Equ. Appl., 26:8 (2020), 1192–1211
L.S. Efremova, “Small C 1-smooth perturbations of skew products and the partial integrability property”, Applied Mathematics and Nonlinear Sciences, 5:2 (2020), 317
Л. С. Ефремова, “Динамика косых произведений отображений интервала”, УМН, 72:1(433) (2017), 107–192 ; L. S. Efremova, “Dynamics of skew products of interval maps”, Russian Math. Surveys, 72:1 (2017), 101–178
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L. S. Efremova, “Nonwandering Sets of C 1-Smooth Skew Products of Interval Maps with Complicated Dynamics of Quotient Map”, J Math Sci, 219:1 (2016), 86
Lyudmila S. Efremova, Springer Proceedings in Mathematics & Statistics, 57, Nonlinear Maps and their Applications, 2014, 39
Л. С. Ефремова, “Теорема о разложении пространства $C^1$-гладких косых произведений со сложной динамикой факторотображения”, Матем. сб., 204:11 (2013), 55–82 ; L. S. Efremova, “A decomposition theorem for the space of $C^1$-smooth skew products with complicated dynamics of the quotient map”, Sb. Math., 204:11 (2013), 1598–1623