A geometrical solution for quadratic bicriteria location models. - Yoshiaki Ohsawa (Eur. J. Oper. Res., 1999)

Map projection errors in the Weber problem. - Yoshiaki Ohsawa; Hirofumi Kagaya; Takeshi Koshizuka (J. Geogr. Syst., 2002)

Efficient Location for a Semi-Obnoxious Facility. - Yoshiaki Ohsawa; Kazuki Tamura (Ann. Oper. Res., 2003)

Euclidean push-pull partial covering problems. - Yoshiaki Ohsawa; Frank Plastria; Kazuki Tamura (Comput. Oper. Res., 2006)

Equity-Efficiency Bicriteria Location with Squared Euclidean Distances. - Yoshiaki Ohsawa; Naoya Ozaki; Frank Plastria (Oper. Res., 2008)