Cohen, David; Edelsack, Edgar A.; Zimmerman, James E. (1970). "Magnetocardiograms taken inside a shielded room with a superconducting point contact magnetometer". Applied Physics Letters. 16 (7). AIP Publishing: 278–280. Bibcode:1970ApPhL..16..278C. doi:10.1063/1.1653195. ISSN0003-6951.
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Cohen, David; Edelsack, Edgar A.; Zimmerman, James E. (1970). "Magnetocardiograms taken inside a shielded room with a superconducting point contact magnetometer". Applied Physics Letters. 16 (7). AIP Publishing: 278–280. Bibcode:1970ApPhL..16..278C. doi:10.1063/1.1653195. ISSN0003-6951.
Cohen, David; Edelsack, Edgar A.; Zimmerman, James E. (1970). "Magnetocardiograms taken inside a shielded room with a superconducting point contact magnetometer". Applied Physics Letters. 16 (7). AIP Publishing: 278–280. Bibcode:1970ApPhL..16..278C. doi:10.1063/1.1653195. ISSN0003-6951.