Stankus, Albinas, Vytautas Stankus, Rimantas Didziokas, and Giedrius Varoneckas. “HIGH FREQUENCY FILTERING OF 24-HOUR HEART RATE DATA”. European Scientific Journal, ESJ 9, no. 33 (November 30, 2013). Accessed April 29, 2025. https://test.eujournal.org/index.php/esj/article/view/2097.