Peña-Casas R.
OSE Paper Series, Research Paper No.12, June 2013, 37p.
Peña-Casas R.
OSE Paper Series, Research Paper No.12, June 2013, 37p.
Eihmanis E.
OSE Paper Series, Research Paper No.13, December 2013, 36p.
Baeten R. ; Vanhercke B. and Coucheir M.
OSE Paper Series, Research paper No. 3, July 2010.