Nunes Antunes Grotz C, Correia Kempers Vieira G, Pereira de Abreu M, Cascardo Bandeira N, Motta Pimenta Velloso M, Luís Belchior dos Santos A. Alternative warning and alarm system by means of a whistle. CDAH [Internet]. 2023 Aug. 2 [cited 2024 Sep. 21];. Available from: https://homepublishing.com.br/index.php/cadernodeanais/article/view/460