@article{Urbanowski:2009,
author
=
"K.Urbanowski",
title
=
"Need the masses of unstable particles and their antiparticles be equal in the CPT-invariant system",
journal
=
"Modern Physics Letters A",
volume
=
"Vol. 19",
number
=
"no 7",
pages
=
"481--496",
year
=
"2004",
}