Biblio

H. Holtslag, Veldman, R., Koppen, B., Andrews, C., y Haanen, R., «All Systems Connect 2023 INTERACT presentations». IRC, Water For People, Water for Good, The Hague, 2023.

H. Holtslag, ,, Sutton, S., Nijssen, D., Haanen, R., y Veldman, R., «Smart hygiene solutions : affordable options for household level». Smart Centre Group, Wageningen, the Netherlands, p. 20 p. : ill., photogr., 2020.