Vallejo, Guillermo, Manuel Ato, Paula Fernández García, Pablo E. Livacic Rojas, y Ellián Tuero Herrero. 2016. «Power Analysis to Detect Treatment Effect in Longitudinal Studies With Heterogeneous Errors and Incomplete Data». Psicothema 28 (Número 3):330-39. https://reunido.uniovi.es/index.php/PST/article/view/11299.