Half-whole Dimensions in Quaternionic Quantum Mechanics
  We introduce {\em half-whole} dimensions for quaternionic matrices and propose a quaternionic version of the Frobenius-Schur theorem which allows us to obtain the proper quaternionic dimensionality for the representations of the Dirac and Duffin-Kemmer-Petiau (DKP) algebras. 
Stefano De Leo (Dip. di Fisica, INFN, Lecce)