1.
[Amsterdam, The Netherlands] : [Elsevier], 2008.
English | OMPI 15 Jun 2008 Vol. 30 No.2 | Available |
2.
3.
[Place of publication not identified] : [publisher not identified], 1999.
English | 80 US | Available |
4.
5.
6.
7.
8.
[Place of publication not identified] : WIPO, [2008]
English | 10.34667/tind.24742 | W A6 L434/4(E) | Available |
9.
10.
Cambridge, Ma : National Bureau Of Economic Research, 2000.
English | G 18 LER.Y | Available |