https://dms.fk.ui.ac.id/mikro/produk/sthai/
Rachmayanti, N. U., & Rahardjo, P. P. (2021). Development Study of T-Z Curve Generated from Kentledge System and Bidirectional Test. UKaRsT, 5(1), 17–32. https://doi.org/10.30737/ukarst.v5i1.1090