@misc{indiciae2b7841edb92f, title = {A portable minute heart rate recorder/decoder system for self-paced walking tests [proceedings].}, author = {M A Ballal and E J Bassey and A Blecher and P H Fentem and D J Hoodless and I A MacDonald}, year = {1980}, url = {https://pubmed.ncbi.nlm.nih.gov/7359385/}, note = {Source identifier: 7359385} }