N. Xu and M. Fok
2010, Article (sc. journal)
M. Fok and J. Le Guerroué and P. Lubello
2010, Article (sc. journal)
M. Fok and N. Xu
2010, Article (sc. journal)
M. Fok and M. Varella
2010, Article (sc. journal)
THE WORLD BANK
2008, Article (sc. journal)
Varella Marcelo and Fok Michel
2014, Article (sc. journal)