@article{BF01829361, author = "Karl Hans Wedepohl", doi = "10.1007/BF01829361", issn = "0016-7835", journal = "Geologische Rundschau", number = "2", pages = "207-223", publisher = "Springer-Verlag", title = "{C}hemical composition and fractionation of the continental crust", url = "http://dx.doi.org/10.1007/BF01829361", volume = "80", year = "1991", }