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by Pena, Ricardo
by Carcel, Ricardo Garcia (COL); Betran, Jose Luis (COL); Pena, Manuel (COL)
by International Workshop on the Implementation of Functional Languages 2; Pena, Ricardo; Arts, Thomas; et al.
by Pena Doctor En Ministerios, Ricardo
by Sanchez-Pena, Ricardo S.
by Carro, Manuel; Pena, Ricardo
by Pena, Ricardo; Page, Rex
by Pena, Ricardo; Van Eekelen, Marko; Shkaravska, Olha
by Lopez-pena, Ramon; Capovilla, Riccardo; Garcia-pelayo, Ricardo; et al.