E. Zimmermann

Maximal constant heart rate--a heart rate based method to estimate maximal lactate steady state in running.

W. Samson, C. Vobejda, K. Fromme, 2006, International journal of sports medicine.

Constant power threshold—predicting maximal lactate steady state in recreational cyclists

C. Vobejda, E. Zimmermann, Tim Wortmann, 2022, German Journal of Exercise and Sport Research.