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APA Citation
Sterckx, S., Brown, I., Kääb, A., Krol, M., Morrow, R., Veefkind, P., Boersma, K. F., De Mazière, M., Fox, N., & Thorne, P. (2020). towards a European Cal/Val service for earth observation. International journal of remote sensing, 41(12), 4496–4511. http://access.bl.uk/ark:/81055/vdc_100101506226.0x000058