Use a short form

Warning²Federal courts, Illinois courts21st and 22nd editions

A Swiss court or reporter's full name, bracketed abbreviation and English rendering appear once in a document; every citation after the first uses the abbreviation alone.¹

1. 1T2.43 Switzerland; T2.41 Switzerland.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.