Upeniece, Irēna, Daina Šmite, and Voldemārs Arnis. 2015. “Nordic Walking or Traditional Walking in Patients With Intermittent Claudication: A Critical Review”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 3 (May): 612-18. https://doi.org/10.17770/sie2015vol3.473.