Michael Chabon in Henry Jenkins; Wyn Kelley; Katie Clinton (2013). Reading in a Participatory Culture: Remixing Moby-Dick in the English Classroom. Teachers College Press. p. 146. ISBN 978-0-8077-5401-6.
Information from a dedicated calibration and validation site has proven invaluable in ensuring the accuracy of satellite altimetry measurements. However, more reliable in situ information can be obtained by an international network being developed within an EU-funded project.