Hybrid Quaternions of Leonardo by M. C. S. Mangueira, F. R. V. Alves, P. M. M. C. Catarino

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A Brief Study on the <i>k</i>-Dimensional Repunit Sequence by Eudes A. Costa, Paula M. M. C. Catarino, Paulo J. M. Vasco, Francisco R. V. Alves

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Tricomplex Fibonacci Numbers: A New Family of Fibonacci-Type Sequences by Eudes A. Costa, Paula M. M. C. Catarino, Francival S. Monteiro, Vitor M. A. Souza, Douglas C. Santos

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Tromboembolias múltiplas associadas a défice de anti-trombina III. by C Catarino, P M Silva, J Quininha, J Serra, N da Silva, E Antunes, R Ferreira, M de Oliveira, R Gracias, A Prates

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