@article {cokkinos1976constancy,
	title = {Constancy of pressure-rate product in pacing-induced angina pectoris.},
	journal = {Heart},
	volume = {38},
	number = {1},
	year = {1976},
	pages = {39{\textendash}42},
	publisher = {BMJ Publishing Group Ltd},
	author = {Cokkinos, Dennis V and Voridis, Eutychios M}
}
