Sugianto, P., Sudarsono, S., Sukma, D. and Sumirat, U. (2022) “Adaptation of introduced Robusta coffee clones in some agroclimate types in East Java.”, Pelita Perkebunan (a Coffee and Cocoa Research Journal), 38(2), pp. 98-107. doi: 10.22302/iccri.jur.pelitaperkebunan.v38i2.323.