Yulianti, M., Subagyo, S., Sujarwo, S., Wahyudi, A. ., Rubiyatno, R., Suganda, M. A., Suryadi, D., & Herdiyana Bastian, R. (2024). Article RETRACTED due to manipulation by the authors Modelo de aprendizaje cooperativo tipo STAD y modelo de aprendizaje convencional: estudio comparativo de los resultados del aprendizaje de las técnicas básicas de pase inferior en voleibol (STAD-type cooperative learning model and conventional learning model: a comparative study on the learning outcomes of basic volleyball lower passing techniques): Article RETRACTED due to manipulation by the authors. Retos, 55, 346–352. https://doi.org/10.47197/retos.v55.103770