The 4p1000 initiative: Opportunities, limitations and challenges for implementing soil organic carbon sequestration as a sustainable development strategy - Rumpel, Cornelia; Amiraslani, Farshad; Chenu, Claire; García Cardenas, Magaly; Kaonga, Martin; Koutika, Lydie-Stella; Ladha, Jagdish Kumar; Madari, Beáta E; Shirato, Yasuhito; Smith, Pete; Soudi, Brahim; Soussana, Jean-François; et al. (Springer, 2020)