Fahruzi, I., I. K. E. Purnama, and M. H. Purnomo. “Single Lead ECG-Apnea Recordings Assessment for Improved Accuracy in Classification of Sleep Disorder Based on AdaBoost”. Jurnal Nasional Teknik Elektro Dan Teknologi Informasi, Vol. 9, no. 2, May 2020, pp. 196-04, doi:10.22146/jnteti.v9i2.159.