@book {8573, title = {Monograph of the genus Digitaria. Universitaire Pers}, year = {1950}, month = {1950///}, publisher = {Leiden: XXI}, organization = {Leiden: XXI}, author = {J.Th, Henrard} } @article {8130, title = {Lepidium. Een systematisch-floristische studie der in Nederland waargenomen soorten en vormen}, journal = {Nederl. Kruidk. Arch.}, volume = {1916}, year = {1916}, month = {1916///}, pages = {206 - 247}, author = {J.Th, Henrard} }