Dear Andrew, The videos of Dear Andrew, The videos of the bell ringers were supplied by the authors of the article. You can get in touch with them via their website http://www.QEDcat.com/ to find out about permissions. Reply
Dear Andrew,
The videos of the bell ringers were supplied by the authors of the article. You can get in touch with them via their website http://www.QEDcat.com/ to find out about permissions.