Le, K., Nguyen, H., Nguyen, H., Nguyen, H. and Huynh, L. 2015. Improvement implementation a software to analysis polysomnography signal. Science and Technology Development Journal. 18, 2 (Jun. 2015), 85-94. DOI:https://doi.org/https://doi.org/10.32508/stdj.v18i2.1076.