JURNAL, R. T. HARMONISA AKIBAT VARIABLE SPEED DRIVE LIFT: Tony Koerniawan, Soetjipto Soewono. ENERGI & KELISTRIKAN, [S. l.], v. 7, n. 2, p. 160–166, 2019. Disponível em: http://jurnal.itpln.ac.id/energi/article/view/304. Acesso em: 25 apr. 2025.