Gengel, M. J.; Larsen, J.; Van Ginneken, M.; Suttle, M. D. An urban collection of modern-day large micrometeorites: Evidence for variations in the extraterrestrial dust flux through the Quaternary. Geology. December 1, 2016, 45 (2): 119. Bibcode:2017Geo....45..119G. doi:10.1130/G38352.1.
Gengel, M. J.; Larsen, J.; Van Ginneken, M.; Suttle, M. D. An urban collection of modern-day large micrometeorites: Evidence for variations in the extraterrestrial dust flux through the Quaternary. Geology. December 1, 2016, 45 (2): 119. Bibcode:2017Geo....45..119G. doi:10.1130/G38352.1.