“Address on the Opening Alexander Von Humboldt Season in Quito, Ecuador, on 13 February 2019 (With an Introduction by Ottmar Ette)”. HiN - Alexander Von Humboldt in the Net. International Review for Humboldt Studies, vol. 20, no. 38, Aug. 2019, pp. 23-30, https://doi.org/10.18443/283.