EL QUINZET de Lluis Segarra.
http://www.elquinzet.org/CalendariProblemes/Gener/dies/08Gener.html
Calendari http://www.elquinzet.org/www.elquinzet.es/CalendariProblemes.html
https://www.dropbox.com/s/2r3d6fj4wcemqb2/serie01_04.pdf?dl=0
https://www.dropbox.com/s/2bzc7iau3bjqwjf/serie05_07.pdf?dl=0
https://www.dropbox.com/s/uqaevhvxb5nzs5g/serie08_10.pdf?dl=0
https://www.dropbox.com/s/sksa0jsump5l7v7/serie11_13.pdf?dl=0