Priestley Chao Estimator in Nonparametric Multivariable Kernel Regression in Estimating The Value of Indonesia’s Balance TradeAndi Tenri Ampa, Ica Monica, Makkulau, La Ode Saidi and Norma MuhtarITM Web Conf., 58 (2024) 04002DOI: https://doi.org/10.1051/itmconf/20245804002