Ruhl, Micha, Hesselbo, Stephen P., Hinnov, Linda, Jenkyns, Hugh C., Xu, Weimu, Riding, James B., Storm, Marisa S., Minisini, Daniel, Ullmann, Clemens V., Leng, Melanie J., "Astronomical constraints on the duration of the Early Jurassic Pliensbachian Stage and global climatic fluctuations", Earth and Planetary Science Letters, 2016