D. L. Keune

Liquid phase epitaxial In1-x Gax P1-z Asz/GaAs1-y Py quaternary (LPE)-ternary (VPE) heterojunction lasers (x ∼0.70, z ∼0.01, y ∼0.40; λ < 6300 Å, 77°K)

James J. Coleman, M. J. Ludowise, W. Hitchens, 1974 .