Jia Yi Chow and Yeou-Teh Liu

and Keith Davids

Karl M. Newell and Yeou-Teh Liu

Robert Hristovski, Keith Davids , Pedro Passos and Duarte Araujo

Robert Rein

C. Button, C-Y. M. Lee, A. Dutt Mazumder, W. K. C. Tan and J-Y. Chow

Christopher AL Edwards and Nicola J Hodges

Ludovic Seifert and Keith Davids

Timothy Hopper

Ian Renshaw, Anthony R. Oldham and Mark Bawden

W. I. Schollhorn, P. Hegen and K. Davids

Keith Davids, Ian Renshaw, Ross Pinder, Duarte Araujo and Luis Vilar

Ricardo J. Fernandes, Julio Garganta and Maria Teresa Anguera

Sousa M, Vilas-Boas J.P and Fernandes R.J

Jose Augusto Rodrigues dos Santos, Rui Filipe Santos Sousa and Tania Patricia Amorim

Ines Goncalves, Pedro Figueiredo, Joao Paulo Vilas-Boas, Ricardo J. Fernandes and Susana Soares

Abraldes J.A, Vila H, Ferragut C, Rodriguez N and Fernandes R

Lurdes Avila-Carvalho, Maria da Luz Palomero, Panaginota Klentrou and Eunice Lebre

Rojapon Buranarugsa, Jose Oliveira and Jose Maia

Filipe Casanova, Julio Garganta, Jose Oliveira and Mark Williams

Rui Manuel Flores Araujo, Jose Afonso Neves and Isabel Maria Ribeiro Mesquita

Carlos Humberto Almeida, Antonio Paulo Ferreira and Anna Volossovitch

Pedro Moreira Silva, Julio Garganta, Jose Antonio Maia and Pedro Manuel Santos

Carlos Lago-Penas, Ezequiel Rey and Joaquin Lago-Ballesteros

J. Pratas, A. Volossovitch and A. P. Ferreira