TI  - DIagnostic importance of electric variations in the heart
PT  - JOUR
DP  - 1909
TA  - Journal of the American Medical Association
pages = {300-301},
VI  - LII
IP  - 4
AID  - 10.1001/jama.1909.02540300040005 [doi]
4100  - http://dx.doi.org/10.1001/jama.1909.02540300040005
SO  - Journal of the American Medical Association January 23, 1909 LII(4):300