Carvalho, Francisco; Mexia, João; Santos, Carla; … - In: Metrika 78 (2015) 3, pp. 337-372
<Para ID="Par1">Models with commutative orthogonal block structure, COBS, have orthogonal block structure, OBS, and their least square estimators for estimable vectors are, as it will be shown, best linear unbiased estimator, BLUE. Commutative Jordan algebras will be used to study the algebraic structure of the...</para>