@inbook{emeis_black_shales_2017, 
author={Emeis, K. and },
title={Black Shales and Sapropels},
year={2017},
editor = {White, W.},
publisher = {Springer},
type = {Book Part},
doi = {10.1007/978-3-319-39193-9_146-1},
note = {Online available at: \url{https://dx.doi.org/10.1007/978-3-319-39193-9_146-1} (DOI). Emeis, K.; : Black Shales and Sapropels. In: White, W. (eds.): Encyclopedia of Geochemistry. Cham: Springer, 2017. (DOI:  /10.1007/978-3-319-39193-9_146-1) (ISBN: 978-3-319-39193-9)}}