@article{Grytczuk:2009,
author
=
"A.Grytczuk and B.Mędryk",
title
=
"On a result of Flammenkamp-Luca concerning noncototient sequence",
journal
=
"Tsukuba Journal of Mathematics",
volume
=
"Vol. 29",
number
=
"no 2",
pages
=
"533--538",
year
=
"2005",
}