-
C.S.Dedecca,
``Observations sur la Situation Actuelle du Mouvement Syndical Bresilien'',
Seminaire International do Institut de Recherches Economique et Social,
(1994).
-
M.L.Possas, J.M.F.Silveira e S.L.M.Salles Filho,
``An Evolutionary Aproach To Technological Innovation in Agriculture: Some Preliminary Remarks'',
Eunetic Conference,
(1994).