MATSUSHITA, MILTON S.; DESCHAMPS, CÍCERO; CORREA JUNIOR, CIRINO  e  MACHADO, MARÍLIA P.. Floral capitula and essential oil production analysis of chamomile (Chamomilla recutita) cultivars at different times of harvest. rev.colomb.cienc.hortic. [online]. 2018, vol.12, n.2, pp.484-490. ISSN 2011-2173.