Dikran Dikranjan,
\emph{van Douwen's problems related to the Bohr topology},
Proceedings of the Ninth Prague Topological Symposium (Prague, 2001),
Topology Atlas, Toronto, 2002, pp. 37--50.
arXiv:math.GN/0204120
@incollection {math.GN/0204120,
author = {Dikranjan, Dikran},
title = {van {D}ouwen's problems related to the {B}ohr topology},
pages = {37--50},
booktitle = {Proceedings of the Ninth Topological Symposium (Prague, 2001)},
publisher = {Topology Atlas},
address = {Toronto},
year = {2002},
editor = {Petr Simon},
arxivnumber = {math.GN/0204120},
note = {arXiv:math.GN/0204120},
mrclass = {05D10 20K45 (22A05 54H11)},
}