Xuxin Mao, Luoshan Xu
      Order-theoretical characterizations of countably approximating posets
      International Journal of Contemporary Mathematical Sciences, Vol. 9, 2014, no. 9, 447-454
      http://dx.doi.org/10.12988/ijcms.2014.4658

Copyright © 2014 Xuxin Mao and Luoshan Xu. This article is distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.