author = {Qunying Liao and Liangjie Ye},
title = {{Lower Bounds and Constructions for q-ary Codes Correcting Asymmetric Errors}},
language = {english},
journal = {Advances in Mathematics(China)},
volume = {42},
number = {6},
pages = {795--800},
isbn_issn = {ISSN:1000-0917 },
year = {2011},
refereed = {yes},
length = {6},
url = {http://advmath.pku.edu.cn/EN/volumn/volumn_1337.shtml}