au.\*:("HELMS WJ")
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POLAR D-REGION ELECTRON DENSITY PROFILES DURING A SOLAR PROTON EVENTHELMS WJ.1978; RADIO SCI.; USA; DA. 1978; VOL. 13; NO 5; PP. 853-858; BIBL. 11 REF.Article
DESIGNING CLASS A AMPLIFIERS TO MEET SPECIFIED TOLERANCES.HELMS WJ.1974; ELECTRONICS; U.S.A.; DA. 1974; VOL. 47; NO 16; PP. 115-118Article
SOUTHERN POLAR REGION MICROPULSATION ACTIVITY ASSOCIATED WITH THE 11976 EVENTWILLARD HR; HELMS WJ; LIEMOHN HB et al.1973; WORLD DATA CENTER A SOLAR-TERRESTR. PHYS., REP. U.A.G.; U.S.A.; DA. 1973; NO 28; PP. 766-771Serial Issue