Verma, S., Sidhu, L., & Kansal, D. (1979). A study of maximum oxygen uptake and heart rate during work and recoveryas measured on cycle ergometer on national Indian sportsmen. British journal of sports medicine, 13(1), S. 24-28, 4 Darst..

Verma, S.K., L.S Sidhu, and D.K Kansal. "A Study of Maximum Oxygen Uptake and Heart Rate During Work and Recoveryas Measured On Cycle Ergometer On National Indian Sportsmen." British Journal of Sports Medicine 13, no. 1 (1979): S. 24-28, 4 Darst..

Verma, S.K., L.S Sidhu, and D.K Kansal. "A Study of Maximum Oxygen Uptake and Heart Rate During Work and Recoveryas Measured On Cycle Ergometer On National Indian Sportsmen." British Journal of Sports Medicine 13.1 (1979): S. 24-28, 4 Darst..