The incompatibility of the retirement pension with work as an artist in public performances: calculating the pension unduly received for days actually worked. Comment on Supreme Court Ruling No 773/2020, of 16 September (JUR 2020, 280023). (2021). Revista de Derecho de la Seguridad Social, Laborum, 26, 125-132. https://revista.laborum.es/index.php/revsegsoc/article/view/448