Mugurevics, Evalds. <br/><br/>
Bollettino del XIII Congreso U.I.S.P.P. ;   no.3 

 - Forli-IT :   A.B.A.C.O,   1996. 
 - Semestral 
 - Aņo II, no.3 (Set. 1996) 
 - Bollettino del XIII Congreso U.I.S.P.P. ;   no.3 .
 - Congreso U.I.S.P.P. .