Elementary particles and SU(4)

Gell-Mann, 1964, Physics Letters, 8, 214, 10.1016/S0031-9163(64)92001-3

Tarjanne, 1963, Phys. Rev. Letters, 11, 447, 10.1103/PhysRevLett.11.447

Hara, 1964, Phys. Rev., 134, B701, 10.1103/PhysRev.134.B701

Gell-Mann, 1962, Phys. Rev., 125, 1067, 10.1103/PhysRev.125.1067

Okubo, 1962, Progr. Theor. Phys., 27, 949, 10.1143/PTP.27.949

M. Nauenberg, private communication.

Kalbfleisch, 1964, Phys. Rev. Letters, 12, 527, 10.1103/PhysRevLett.12.527

Goldberg, 1964, Phys. Rev. Letters, 12, 546, 10.1103/PhysRevLett.12.546

S. Coleman and H. Schnitzer, to be published.

Coleman, 1964, Phys. Rev., 134, B671, 10.1103/PhysRev.134.B671

Cabbibo, 1963, Phys. Rev. Letters, 10, 531, 10.1103/PhysRevLett.10.531

Salam, 1964, Physics Letters, 8, 216, 10.1016/S0031-9163(64)92002-5

Schwinger, 1964, Phys. Rev. Letters, 12, 630, 10.1103/PhysRevLett.12.630