Probably the best reference to what one have ac-hieved comes directly from those who have taken the benefits and who are content with the level of service that had been presented.
Our choice, this time, comes to an uncomissioned article published in a branch magazine:

Translation of the article: "JUKO CIGRE entrusted the organization of this conference to Agency BBN that carried out its task highly professionally, accurately and in top-quality. In spate of a great number of participants, exhibitors and guests, there is a general impression that everything was going on smoothly and without any bigger pro-blems. We are going to remind that BBN is an experienced agency that last year organized the CIRED conference on Zlatibor as well as many other similar manifestations so that the Organizational Committee of JUKO CIGRE was working with a reliable partner."