Octonionic Hermitian Matrices with Non-Real Eigenvalues
  We extend previous work on the eigenvalue problem for Hermitian octonionic matrices by discussing the case where the eigenvalues are not real, giving a complete treatment of the 2x2 case, and summarizing some prelimenary results for the 3x3 case. 
Tevian Dray, Jason Janesky, and Corinne A. Manogue