A. da Rocha Melo Nascimento, M. Goulart Mocker Pinto, T. Pinório Omena, W. Coelho de Albuquerque Pereira, and J. F. Silva Costa-Júnior, “How reliable are the ultrasonic output power values emitted by therapeutic ultrasound devices in physiotherapy?”, Rev Bras Fis Med, vol. 17, p. 709, Jul. 2023.