Thi Minh Thu Tran, Thanh Binh Nguyen, Peter Winterhalter and Gerold Jerz 2022. Off-line ESI-MS/MS profiling of betalains and flavonoid glycosides isolated from (fruit) Opuntia stricta var. dillenii and (vegetable) Atriplex hortensis var. rubra by countercurrent chromatography. Vietnam Journal of Science, Technology and Engineering. 64, 1 (Mar. 2022), 20-26. DOI:https://doi.org/10.31276/VJSTE.64(1).20-26.