F. F. WARDANI, D. EFENDI, D. DINARTI, and J. R. Witono, “Cryopreservation of papaya seeds cv. Sukma, Callina, and Caliso: Effect of loading treatment and immersion time in plant vitrification solution-2”, Nusantara Biosci, vol. 11, no. 1, pp. 71–78, Mar. 2019, doi: 10.13057/nusbiosci/n110112.