Հայրիկյան, Պարույր Արշավիրի,  1949- <br/><br/>
The formula of democraticity and complete democracy or necessary features of a democratic parlamentary system / 
Paruyr Hayrikyan, translated by Vagharshak Vardanyan. 
 - Yerevan :  UNSD publishing house,  2007. 
 - 16 p. ;  21 cm. 
 - 321.7(47.925) (NLA) .
<br/><br/><label>ISBN: </label>9789994184019 
<br/><br/><label>Universal Decimal Class. No.: </label>321.7(47.925) (NLA)