Optimal design for the Bradley-Terry paired comparison model. - Ulrike Graßhoff; Rainer Schwabe (Stat. Methods Appl., 2008)

Algorithms for approximate linear regression design with application to a first order model with heteroscedasticity. - Norbert Gaffke; Ulrike Graßhoff; Rainer Schwabe (Comput. Stat. Data Anal., 2014)