1996-1997
Campinas, SP, Brazil: At the 1996
WORKSHOP on Orthogonal Functions, Moment Theory, Padé Appro-ximants and Applications
Campinas, SP, Brazil: At the 1996
WORKSHOP on Orthogonal Functions, Moment Theory, Padé Appro-ximants and Applications
Goiânia, GO, Brazil: At the XIX Congresso Nacionalde Matemática Aplicada e Computacional.
Gramado, RS, Brazil: At the XX Congresso Nacionalde Matemática Aplicada e Computacional.