W. Lempken et R. Staszewski, A CONSTRUCTION OF (3)OVER-CAPMCL AND SOME REPRESENTATION-THEORY IN CHARACTERISTIC-5, Linear algebra and its applications, 192, 1993, pp. 205-234
We construct the group 3McL as an irreducible subgroup of GL45(25) and
then use this to determine the remaining 5-modular irreducible matrix
representations together with the corresponding vertices and sources.
We also obtain the nonfaithful irreducible 5-modular characters of 3M
cL and the corresponding decomposition matrix.