Gonçalves S, Martins N, Romano A. Micropropagation and conservation of endangered species Plantago algarbiensis and P. almogravensis. Biologia Plantarum. 2009;53(4):774-778. doi:10.1007/s10535-009-0142-8

Gonçalves S, Grevenstuk T, Martins N, Romano A. Antioxidant activity and verbascoside content in extracts from two uninvestigated endemic Plantago spp. Industrial Crops and Products. 2015;65:198 - 202. doi:10.1016/j.indcrop.2014.12.011

Gonçalves S, Martins N, Romano A. Physiological traits and oxidative stress markers during acclimatization of micropropagated plants from two endangered Plantago species: P. algarbiensis Samp. and P. almogravensis Franco. In Vitro Cellular & Developmental Biology - Plant. 2017;53(3):249 - 255. doi:10.1007/s11627-017-9812-y