1. Abercrombie J (1813) In: Rivington J (ed) Every man his gardener. 20th edition. The British Library, p 690
2. European Environmental Agency (EEA) (2006) Vulnerability and adaptation to climate change in Europe, vol 2006. EEA, Copenhagen, p 84. https://www.eea.europa.eu/publications/technical_report_2005_1207_144937/file
3. Aiwansoba RO, Ogwu MC, Osawaru ME (2019) Assessing the relatedness of Abelmoschus accessions using morphological characters. J Trop Biol Conservat 16:193–207
4. Albach DC, Chase MW (2001) Paraphyly of Veronica (Veroniceae; Scrophulariaceae): Evidence from the Internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA. J Plant Res 114:9–18
5. Alvarez Fernandez I (2003) Systematics of Eurasian and North African Doronicum (Asteraceae: Senecioneae). Ann Missouri Bot Gard 90(319–389):2003