@article{WangC13,
  author  = {Yanjing Wang and
               Qinxiang Cao},
  title   = {On axiomatizations of public announcement logic},
  journal = {Synthese},
  volume  = {190},
  number  = {Supplement-1},
  pages   = {103--134},
  year    = {2013},
  doi     = {10.1007/s11229-012-0233-5}
}

