@Article{446945,
     author = "Elżbieta Pietruska-Madej",
     title = "Intelligibilia : trzecie królestwo Fregego i Poppera ",
     year =  1994,
     volume =  2,
     number =  1,
     journal =  Filozofia Nauki,
     pages =  s. 55-66,
    }