Oxenham, M. G.Casse, L. R. A. (Rey)2006-06-192006-06-192003Bollettino della Unione Matematica Italiana. 6B:57-870041-7084http://hdl.handle.net/2440/3468enTowards the determination of the regular n-covers of PG(3,q)Journal article0020030788000181111500004