MADEJ, Aleksandra, ŚLIWIŃSKI, Zbigniew, WYPYCH, Żaneta and ŻURAWSKI, Arkadiusz. Assessment of value of protraction angle and functional disorders of motion segments of cervical spine in bus drivers. Journal of Education, Health and Sport. Online. 31 October 2022. Vol. 12, no. 10, pp. 306-318. [Accessed 6 May 2024]. DOI 10.12775/JEHS.2022.12.10.037.