Moraes, P. L. R. D. (2020).

Nomenclatural notes on the taxonomic identity of Sprengel’s Erigeron dubius, E. montevidensis, E. resinosus and E. filiformis (Asteraceae)

. Phytotaxa, 438(2), 95–106. https://doi.org/10.11646/phytotaxa.438.2.3