The improvements of the existing system of the concepts about PPP deviations - derived from the Estonian experienceRaim, JaanusPapers of the Estonian-Finnish Joint Seminar on Economic Integration and the European Union Enlargement : 22-23 November 2002, Tallinn2003 / TTUWPE 03/103, p. 217-229 : ill https://artiklid.elnet.ee/record=b1015954*est The improvements of the existing system of the concepts about PPP deviations - derived from the Estonian experienceRaim, JaanusProceedings of the COPE 2003 : "Global Business: Economic, Political, Social, and Cultural Issues" : Congress of Political Economists (COPE) International Conference : the Fourteenth Annual International Conference : July 12-19, 2003 : Mexico City, Mexico. Volume 22004 / p. 290-302 : ill