A note on the arithmeitc of the orthogonal group Nelo, D. Allan — 1973 Revista colombiana de matematicas
Maximal open compact subgroups of the projective symplectic group over a locally compact discrete valuation field Nelo D. Allan — 1971 Revista colombiana de matematicas
A Simple Proof Of A Generalization Of Eisenstein's Irreducibility Criterion. Nelo D. Allan — 1987 Revista colombiana de matematicas