@article{10_4064_fm224_3_4,
     author = {Marcin Kulczycki and Dominik Kwietniak and Piotr Oprocha},
     title = {On almost specification and average
 shadowing properties},
     journal = {Fundamenta Mathematicae},
     pages = {241--278},
     publisher = {mathdoc},
     volume = {224},
     number = {3},
     year = {2014},
     doi = {10.4064/fm224-3-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm224-3-4/}
}