@Article{484926,
     author = "Wojciech Krawiec",
     title = "The efficiency of active asset allocation funds in the period of instability at financial markets",
     year =  2012,
     volume =  12(20),
     number =  2,
     journal =  Folia Oeconomica Stetinensia,
     pages =  s. 147-159,
    }