@article{MZM_2013_93_4_a11,
     author = {Xiuli Chen and Haiyan Zhu and Fang Li},
     title = {Cotorsion {Dimensions} and {Hopf} {Algebra} {Actions}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {614--623},
     year = {2013},
     volume = {93},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_93_4_a11/}
}