@misc{indiciaed660e1d2c169, title = {PULSE COUNTING DURING HEAVY EXERCISE USING NEW ELECTRODES FOR DISPLAYING THE ELECTROCARDIOGRAM.}, author = {C T DAVIES and J G COPLAND}, year = {1964}, doi = {10.1152/jappl.1964.19.2.325}, url = {https://pubmed.ncbi.nlm.nih.gov/14155305/}, note = {Source identifier: 14155305} }