@article{MET_1994__41_5_176524,
     author = {W.L. Notz and D.C. Whittinghill and Y. Zhu},
     title = {Robustness to the {Unavailability} of {Data} in {Block} {Designs.}},
     journal = {Metrika},
     pages = {263--276},
     publisher = {mathdoc},
     volume = {41},
     number = {5},
     year = {1994},
     zbl = {0804.62069},
     url = {http://geodesic.mathdoc.fr/item/MET_1994__41_5_176524/}
}