Pius Nderitu KIHARA. Model Calibration at Different Stages in Cluster Sampling; Use of Penalized Splines in Semiparametric Estimation. Recent Advances in Mathematical Research and Computer Science Vol. 4, [S. l.], p. 1–14, 2021. DOI: 10.9734/bpi/ramrcs/v4/14456D. Disponível em: https://stm.bookpi.org/RAMRCS-V4/article/view/4867. Acesso em: 7 jun. 2026.