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4 matching references were found.

Helal, A.I.; Zahran, N.F., Kinetic shift in some para-substituted acetophenones, Org. Mass Spectrom., 1978, 13, 549. [all data]

Rabbih, M.A.; Helal, A.I.; Fahmey, M.A., Mass spectrometric studies of methylacetophenone isomers by electron impact, Indian J. Pure Appl. Phys., 1981, 19, 335. [all data]

Selim, E.T.M.; Helal, A.I., Heat of formation of CH₂=OH⁺ fragment ion, Indian J. Pure Appl. Phys., 1981, 19, 977. [all data]

Selim, E.T.M.; Helal, A.I., The study of C₁-C₃ monosubstituted alkyl benzenes by the inverse convolution of first differential ionization efficiency curves, Org. Mass Spectrom., 1982, 17, 539. [all data]