1. University of Paris thesis;Petiau;Acad. R. Belg., A. Sci. Mém. Collect.,1936
2. Quantum theory of Einstein-Bose particles and nuclear interaction;Kemmer;Proc. R. Soc. A,1938
3. On the characteristic matrices of covariant systems;Duffin;Phys. Rev.,1938
4. The particle aspect of meson theory;Kemmer;Proc. R. Soc. A,1939
5. Noncausal propagation in spin-0 theories with external field interactions;Guertin;Phys. Rev. D,1977