Velikova, T., Lazova, S., Perenovska, P., Tumangelova-Yuzeir, K., Miteva, D., Velikov, P., Ivanova-Todorova, E., Kyurkchiev, D., & Petrova, G. (2019). Th17 cells in Bulgarian children with chronic obstructive lung diseases. Allergologia Et Immunopathologia, 47(3), 227-233. https://www.all-imm.com/index.php/aei/article/view/317