van Hoesel, A., Hoek, W. Z., Pennock, G. M., Kaiser, K., Plümper, O., Jankowski, M., Hamers, M. F., Schlaak, N., Küster, M., Andronikov, A. V., Drury, M. R. (2015): A search for shocked quartz grains in the Allerod-Younger Dryas boundary layer. - Meteoritics and Planetary Science, 50, 3, 483-498.https://doi.org/10.1111/maps.12435