1985, Appl. Phys. Lett., 46, 1156, 10.1063/1.95742
1988, Appl. Phys. Lett., 52, 564, 10.1063/1.99418
1974, Phys. Rev. Lett., 33, 960, 10.1103/PhysRevLett.33.960
1976, Phys. Rev. B, 14, 1610, 10.1103/PhysRevB.14.1610
1987, Appl. Phys. Lett., 50, 273, 10.1063/1.98223
1987, Appl. Phys. Lett., 50, 1092, 10.1063/1.97928
1988, Appl. Phys. Lett., 52, 1701, 10.1063/1.99022
1988, Appl. Phys. Lett., 52, 1320, 10.1063/1.99147
1979, Solid State Commun., 32, 603, 10.1016/0038-1098(79)90710-5
1976, Phys. Rev. Lett., 37, 1425, 10.1103/PhysRevLett.37.1425
1987, Phys. Rev. Lett., 59, 1345, 10.1103/PhysRevLett.59.1345
1987, Phys. Rev. Lett., 59, 696, 10.1103/PhysRevLett.59.696
1981, Phys. Rev. B, 24, 5693, 10.1103/PhysRevB.24.5693
1985, Appl. Phys. Lett., 47, 1257, 10.1063/1.96434
1982, Solid State Commun., 44, 715, 10.1016/0038-1098(82)90590-7
1986, Phys. Rev. B, 33, 8269, 10.1103/PhysRevB.33.8269
1969, Phys. Rev. Lett., 23, 1111, 10.1103/PhysRevLett.23.1111
1985, Phys. Rev. Lett., 54, 1283, 10.1103/PhysRevLett.54.1283
1986, Solid State Commun., 60, 557, 10.1016/0038-1098(86)90270-X
