@article{MS2_1960__8_165731,
     author = {Else Sandved},
     title = {A {Type} of {Serially} {Balanced} {Experimental} {Designs.}},
     journal = {Mathematica Scandinavica},
     pages = {43--54},
     year = {1960},
     volume = {8},
     zbl = {0097.13503},
     url = {http://geodesic.mathdoc.fr/item/MS2_1960__8_165731/}
}