@article{GDZPPN00246618X, title = {Optimality of Block Designs with Variable Block Sizes and Random Block Effects.}, journal = {Metrika}, volume = {41}, year = {1994}, pages = {71-81}, zbl = {0802.62067}, url = {http://dml.mathdoc.fr/item/GDZPPN00246618X} }
Kunert, Joachim. Optimality of Block Designs with Variable Block Sizes and Random Block Effects.. Metrika, Tome 41 (1994) pp. 71-81. http://gdmltest.u-ga.fr/item/GDZPPN00246618X/