@Article{383089,
     author = "Bernard Hermes, Jarosław Źrałka",
     title = "Nakum and Yaxha during the Terminal Classic period : external relations and strategies of survival at the time of the collapse",
     year =  2012,
     volume =  4,
     number =  ,
     journal =  Contributions in New World Archaeology,
     pages =  s. 175-204,
    }