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au.\*:("HELAL AI")

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IONIZATION AND DISSOCIATION OF DIETHYLAMINE BY FIELD IONIZATION MASS SPECTROMETRYZAHRAN NF; HELAL AI.1983; ORGANIC MASS SPECTROMETRY; ISSN 0030-493X; GBR; DA. 1983; VOL. 18; NO 5; PP. 212-214; BIBL. 8 REF.Article

THE STUDY OF C1-C3 MONOSUBSTITUTED ALKYL BENZENES BY THE INVERSE CONVOLUTION OF FIRST DIFFERENTIAL IONIZATION EFFICIENCY CURVESSELIM ETM; HELAL AI.1982; ORG. MASS. SPECTROM.; ISSN 0030-493X; GBR; DA. 1982; VOL. 17; NO 11; PP. 539-543; BIBL. 25 REF.Article

FORMATION OF DOUBLY CHARGED IONS IN FIELD IONIZATION MASS SPECTRA OF PARA SUBSTITUTED ACETOPHENONESHELAL AI; ZAHRAN NF.1979; ORG. MASS. SPECTROM.; GBR; DA. 1979; VOL. 14; NO 1; PP. 56-57; BIBL. 6 REF.Article

KINETIC SHIFT IN SOME PARA-SUBSTITUTED ACETOPHENONESHELAL AI; ZAHRAN NF.1978; ORG. MASS SPECTROM.; GBR; DA. 1978; VOL. 13; NO 9; PP. 549-550; BIBL. 7 REF.Article

FIELD ION EMISSION FROM THIN TUNGSTEN WIRES COVERED WITH A LAYER FROM AN ETCHING PROCEDURESCHMIDT WA; GOLDENFELD IV; HELAL AI et al.1981; INT. J. MASS SPECTROM. ION PHYS.; ISSN 0020-7381; NLD; DA. 1981; VOL. 38; NO 2-3; PP. 241-254; BIBL. 13 REF.Article

FIELD IONIZATION AND SURFACE INTERACTION OF SILANE ON TUNGSTENBLOCK JH; HELAL AI; FRANK O et al.1982; INT. J. MASS SPECTROM. ION PHYS.; ISSN 0020-7381; NLD; DA. 1982; VOL. 43; NO 2-3; PP. 157-166; BIBL. 25 REF.Article

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