An optimal (Q, r) policy for a multipart assembly system under stochastic part procurement lead times. - Okitsugu Fujiwara; Dayani Sedarage (Eur. J. Oper. Res., 1997)

Determining optimal order splitting and reorder level for N-supplier inventory systems. - Dayani Sedarage; Okitsugu Fujiwara; Huynh Trung Luong (Eur. J. Oper. Res., 1999)