Lan, W. G., Wong, M. K., Chen, N. & Sin Y. M., 1994. Four-level orthogonal array design as a chemometric approach to the optimization of polarographic reaction system for phosphorus…
Lan, W. G., Wong, M. K. & Sin, Y. M., Microwave digestion of fish tissue for senium determination by differential pulse polarography. Talanta, 1994. 41, 53-58.
Lan, W. G., Wong, M. K. & Sin, Y. M., Comparison of four microwave digestion methods for the determination of selenium in fish tissue by using hydride generation atomic absorption…
Wan, H. B., Lan, W. G., Wong, M. K., & Mok, C. Y., Orthogonal array designs for the optimization of liquid chromatographic analysis of pesticides. Anal. Chim. Acta, 1994. 289,…
Wan H. B., Lan, W. G., Wong, M. K., Mok, C. Y. & Poh, Y. H., Orthogonal array designs for the optimization of solid-phase extraction. J. Chromatogr., 1994. 677, 255-263.
Lan, W. G., Wong, M. K., Chen, N. & Sin, Y. M., Orthogonal array design as a chemometric method for the optimization of analytical procedures. Part 1. Two-level design and…
Lan, W. G., Wong, M. K., Chen, N. & Sin, Y. M., Orthogonal array design as a chemometric method for the optimization of analytical procedures. II: Four-level design and its…
Lan, W. G., Wong, M. K., Chee, K. K. & Sin, Y. M., Orthogonal array design as a chemometric method for the optimization of analytical procedures. III: Five-level design and…