A note on an L-approach for solving the manufacturer's pallet loading problem. - Ernesto G. Birgin; Reinaldo Morabito; F. H. Nishihara (J. Oper. Res. Soc., 2005)

Orthogonal packing of rectangular items within arbitrary convex regions by nonlinear optimization. - Ernesto G. Birgin; José Mario Martínez; F. H. Nishihara; Débora P. Ronconi (Comput. Oper. Res., 2006)