@article{ND_2018_14_4_a8,
     author = {A. Dzhalilov and D. Mayer and S. Djalilov and A. Aliyev},
     title = {An {Extention} of {Herman{\textquoteright}s} {Theorem} for {Nonlinear} {Circle} {Maps} with {Two} {Breaks}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {553--577},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ND_2018_14_4_a8/}
}