LB (PB1)Municipal Water Supply and Sewerage Company of KomotiniGreecePB2Municipal Water Supply and Sewerage Company of ThermiGreecePB3University of Thessaly – Special Account Funds for Research – Department of Civil EngineeringGreecePB4Municipality of KardzhaliBulgariaPB5Municipality of Gotse DelchevBulgariaPB6Municipal Water Supply and Sewerage Company of ThermaikosGreece