@article{Synówka:2012,
author
=
"E.Synówka and S.Zontek",
title
=
"On optimality of the orthogonal block design",
journal
=
"Discussiones Mathematicae Probability and Statistics",
volume
=
"Vol. 32",
number
=
"no. 1-2",
pages
=
"59--68",
year
=
"2012",
}