Ruslan, Ruslan, 		Linuwih, Susanti, 		Purhadi, Purhadi, AND 		S, Sony.
" Optimum Simplex Lattice Designs of Low Order Multiresponse Surface Model by D-Optimum Criterion" <em>Jurnal ILMU DASAR</em> [Online], Volume 11 Number 2 (1 July 2010)