1
Published 2006
OECD Publishing

2
Published 2005
OECD Publishing

4
Published 2005
OECD Publishing

5
Published 2001
OECD Publishing

6
Published 2003
OECD Publishing

7
Published 2010
OECD Publishing

8
Published 2006
OECD Publishing

11
Published 2001
OECD Publishing

12
Published 2004
OECD Publishing

16
by Benezech, Vincent
Published 2018
OECD Publishing

18
Published 2013
OECD Publishing

19
by Urs Feller
Published 2018
MDPI - Multidisciplinary Digital Publishing Institute

20
by Christopher K. Pham
Published 2017
Frontiers Media SA