@article{AA_2014_26_5_a0,
     author = {L. Xiao and I. Zhukov},
     title = {Ramification of higher local fields, approaches and questions},
     journal = {Algebra i analiz},
     pages = {1--63},
     year = {2014},
     volume = {26},
     number = {5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_2014_26_5_a0/}
}