@misc{epos1957,
           month = {June},
           title = {Pyh{\"a}salmi bedrock map with the scale 1:200000},
          author = {. .},
            year = {2017},
            note = {Open license for GTK Bedrock map - Pyhasalmi\_Lithology.tif, is in the document 'Geological survey  Finland\_open\_licence\_Original\_ data\_en.pdf'},
             url = {https://episodesplatform.eu/eprints/1957/}
}