- en.wikipedia.org/wiki/Single_Euro_Payments_Area
- www.sepa.ch/en/home.html
- SDD – SEPA Direct Debit, en.wikipedia.org/wiki/Direct_Debit
- http://www.sepa.ch/en/home/direct-debits.html
- http://www.sepa.ch/en/home/credit-transfers.html
- http://www.sepa.ch/en/home/card-payments.html
- http://www.sepa.ch/en/home/direct-debits/creditor-identifier.html : 2+2+3+11
- http://www.sepa.ch/en/home/direct-debits/sepa-direct-debit-terms.html
- …