Of course on the issue of unilingual incorporation by reference, the highest decision we have would be from the Supreme Court of Canada in 1992, the Manitoba language reference, which really set out the parameters for when it is acceptable to incorporate material that is unilingual. That is really the highest level of court.
There are other court decisions. One of the highest would be from the British Columbia Court of Appeal from about 20 years ago, which set out the principle that documents that are incorporated by reference don't need to be published in the Canada Gazette and registered.
There is a case called Scott that dealt with reciprocal enforcement of family law orders and incorporation of provincial legislation. Again that was probably almost 20 years ago.
There is the odd case in which a document that had been incorporated by reference needed to be interpreted, but it is very rare. There is very limited case law at all to provide guidance on this, and no judicial guidance, which is why the government and the standing joint committee have not agreed on the principles that apply to this.