Бондар Анастасія Сергіївна (Anastasia B., Салтан Наталія Миколаївна (Nataliia S. and Салтан Олександр Миколайович (Oleksandr S. 2015. Calendar of holding sports competitions as a source in study of features of development of domestic sport in the 30s of the xxth century. Slobozhanskyi Herald of Science and Sport. 4(48) (Aug. 2015), 26–30. DOI:https://doi.org/10.15391/snsv.2015-4.004.