“Multi-Modal Parametric Modeling of Airflow and Photoplethysmography (PPG) Signals Using Advanced Kalman Filtering for Real-Time Sleep Apnea Characterization”. The Science Post 2, no. 2 (June 26, 2026). Accessed June 27, 2026. https://www.thesciencepostjournal.com/index.php/tsp/article/view/148.