Nevriansyah, E.; Afdal Luthfi; Einsrizkianne Edray, A. .; Marind, G. . DROWTECT – VIBRATING CHAIR AND SPRAY NOZZLE TO PREVENT SLEEPINESS IN CAR DRIVERS BASED ON IMAGE PROCESSING WITH DROWSINESS DETECTION ALGORITHM. ARITMETIKA 2022, 1, 18-25.