A DESCRIPTION OF AN EXTREMELY LOW FREQUENCY LOOP-LOOP GEOPHYSICAL SYSTEM = DESCRIPTION D'UN SYSTEME GEOPHYSIQUE BOUCLE-BOUCLE A TRES BASSE FREQUENCECOOKE J; BRADLEY J; MITCHELL C et al.1981; OPEN-FILE REP. (U. S. GEOL. SURV. 1978); ISSN 0196-1497; USA; DA. 1981; NO 81-1130; 64; ILL.Serial Issue

COMPARISON OF THE S/N RATIOS OF LOW-FREQUENCY HYDROPHONES AND GEOPHONES AS A FUNCTION OF OCEAN DEPTH = COMPARAISON DES RAPPORTS SIGNAL/BRUIT DES HYDROPHONES ET GEOPHONES A BASSE FREQUENCE DEPENDANT DE LA PROFONDEUR DE L'OCEANBROCHER THOMAS M; IWATAKE BRIAN T; GETTRUST JOSEPH F et al.1981; BULL. SEISMOL. SOC. AM.; ISSN 0037-1106; USA; DA. 1981-10; VOL. 71; NO 5; PP. 1649-1659; BIBL. 25 REF.; ILL.Article