Спироски, М. (2015). Letter: Changes in Blood Lactates during Ergometric Testing on Professional Football Players during One Half Season Competitions (Maced Med Electr J. 2015 Oct 02; 2015;50012. http://dx.doi.org/10.3889/mmej.2015.50012). Macedonian Medical Electronic Journal, 1(1), 1–7. https://doi.org/10.3889/mmej.2015.50018