Parzonko, Andrzej; Kiss, Anna K. (17 Dec 2018). "Caffeic acid derivatives isolated from Galinsoga parviflora herb protected human dermal fibroblasts from UVA-radiation". Phytomedicine: International Journal of Phytotherapy and Phytopharmacology. 57: 215–222. doi:10.1016/j.phymed.2018.12.022. ISSN1618-095X. PMID30785017. S2CID73505361.
Parzonko, Andrzej; Kiss, Anna K. (17 Dec 2018). "Caffeic acid derivatives isolated from Galinsoga parviflora herb protected human dermal fibroblasts from UVA-radiation". Phytomedicine: International Journal of Phytotherapy and Phytopharmacology. 57: 215–222. doi:10.1016/j.phymed.2018.12.022. ISSN1618-095X. PMID30785017. S2CID73505361.
Parzonko, Andrzej; Kiss, Anna K. (17 Dec 2018). "Caffeic acid derivatives isolated from Galinsoga parviflora herb protected human dermal fibroblasts from UVA-radiation". Phytomedicine: International Journal of Phytotherapy and Phytopharmacology. 57: 215–222. doi:10.1016/j.phymed.2018.12.022. ISSN1618-095X. PMID30785017. S2CID73505361.
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Parzonko, Andrzej; Kiss, Anna K. (17 Dec 2018). "Caffeic acid derivatives isolated from Galinsoga parviflora herb protected human dermal fibroblasts from UVA-radiation". Phytomedicine: International Journal of Phytotherapy and Phytopharmacology. 57: 215–222. doi:10.1016/j.phymed.2018.12.022. ISSN1618-095X. PMID30785017. S2CID73505361.