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Hutnik, Wiadomości Hutnicze > 2008 > Vol. 75, nr 12 > 732-738
Gospodarka Narodowa. The Polish Journal of Economics > 2007 > 220 > 11-12 > 35-53
Economics of Education Review > 2007 > 26 > 5 > 604-614
Economics of Education Review > 2007 > 26 > 3 > 375-386
Gospodarka Narodowa > 2007 > 18 > 11-12 > 35-53
Economics of Education Review > 2006 > 25 > 6 > 605-617
Journal of Asian Economics > 2005 > 16 > 4 > 663-687
Economics of Education Review > 2005 > 24 > 1 > 55-65
Economics of Education Review > 2005 > 24 > 1 > 67-83
Economics of Education Review > 2004 > 23 > 6 > 605-614
World Development > 2004 > 32 > 5 > 871-885
Economics of Education Review > 2004 > 23 > 2 > 191-202
Journal of Development Economics > 2004 > 73 > 1 > 369-394
2004 IEEE International Engineering Management Conference (IEEE Cat. No.4CH 37574) > 2 > 606 - 612 Vol.2
Economics of Education Review > 2003 > 22 > 4 > 409-420
Economics Letters > 2003 > 80 > 1 > 31-34
Economics of Education Review > 2003 > 22 > 3 > 285-289
Economics and Human Biology > 2003 > 1 > 2 > 207-221
Economics of Education Review > 2003 > 22 > 2 > 213-220