https://www.prri.org/research/mtv-culture-and-religion/
https://www.lobbycontrol.de/wp-content/uploads/LobbyControl-Jahresbericht_20-21-210630-web2.pdf
https://www.esri.ie/system/files/publications/RB202025.pdf
https://www.esri.ie/system/files/publications/RS164.pdf