This February we went to trial in collaboration with our colleagues in Zaragoza from the law firm Gimeno del Busto.
http://iurispan.org/bufete-gimeno-del-busto/
Now we are the ones who refer a matter to our colleagues in Gijón, from Mijares Abogados, to attend a trial on our behalf.
http://iurispan.org/mijares-abogados/
With these collaboration agreements the client avoids travel and expenses of the lawyer assistance outside their jurisdiction, and ensures direct treatment.