García J, De Lera V, Lacambra D, Gimeno F, Alesanco Álvaro. Design and Development of an Android App Based on Firebase in the Study of Unsportsmanlike Behaviors in Grassroots Tennis Competitions. JMM [Internet]. 2021 Jun. 21 [cited 2024 May 7];17(4):603-36. Available from: https://journals.riverpublishers.com/index.php/JMM/article/view/5561