https://boe.es/diario_boe/txt.php?id=BOE-A-2021-12437
https://boe.es/boe/dias/2021/07/26/pdfs/BOE-A-2021-12437.pdf
Pagina


https://www.thebiccountant.com/2017/02/14/dynamically-flatten-parent-child-hierarchies-in-dax-and-powerbi/


https://www.biti.es/mejorar-tablas-de-fechas-para-time-intelligence/

https://www.daxpatterns.com/parent-child-hierarchies-excel-2013/#:~:text=DAX%20does%20not%20directly%20support%20parent-child%20hierarchies.%20To,to%20naturalize%20a%20parent-child%20hierarchy%20using%20calculated%20columns.