Bibliography
Document part I. Author Šafránek Josef M. Issue data Praha-Chodov : Josef M. Šafránek, 1991-1993 File Books Document part II. Author Šafránek Josef M. Issue data Praha-Chodov : Josef M. Šafránek, 1993-1995 File Books Document part III. Author Šafránek Josef M. Issue data Praha-Chodov : Josef M. Šafránek, 1995-1997 File Books