10.  Thanks

The authors would like to pay tribute to Professors Michel PIGEON (Université Laval) and Robert DEGEIMBRE (Université de Liège), who trained them in this discipline and taught them the scientific foundations on which all the developments presented here are based.

Thanks are also due to the governments of Quebec and Wallonia-Brussels (Wallonia-Brussels International), which have enabled researchers from the Université de Liège and Université Laval to exchange and collaborate on these research themes for over 15 years.