@article {hilger_mikromorphologische_1986,
	title = {Mikromorphologische Untersuchungen an Klausenoberfl{\"a}chen von Boraginaceae II. <i>Mattiastrum</i> (Boiss.) Brand (Cynoglosseae)},
	volume = {61},
	year = {1986},
	pages = {145{\textendash}165},
	author = {HH Hilger}
}
