@article{MET_1995__42_3-4_176615,
     author = {Nizam Uddin},
     title = {On {Recursive} {Construction} for {Balanced} {Incomplete}  {Block} {Designs} with {Nested} {Rows} and {Columns.}},
     journal = {Metrika},
     pages = {341--346},
     publisher = {mathdoc},
     volume = {42},
     number = {3-4},
     year = {1995},
     zbl = {0835.62064},
     url = {http://geodesic.mathdoc.fr/item/MET_1995__42_3-4_176615/}
}