Molina Abril, J. A., Martínez Laborde, J. B., & Pizarro, J. M. (1997). Discussion of the morphology and distribution of Rorippa microphylla (Cruciferae) and related taxa from the Iberian Península. Anales Del Jardín Botánico De Madrid, 55(2), 225–234. https://doi.org/10.3989/ajbm.1997.v55.i2.271