@misc{001/1_7kd62k00/5, title = {Bulgaria Sofia - Long term study on migratory movement of Alpine swifts (Apus melba)-reference-data}, author = {Meier, CM and Peev, SG and Liechti, F}, year = {2020}, URL = {http://dx.doi.org/10.5441/001/1.7kd62k00/5}, doi = {doi:10.5441/001/1.7kd62k00/5}, publisher = {Movebank data repository} }