@article{05379365,
title = {On the number of countable models of complete theories with finite Rudin-Keisler preorders.},
journal = {Sibirskij Matematicheskij Zhurnal},
volume = {48},
year = {2007},
pages = {417-422},
zbl = {1164.03317},
language = {en},
url = {http://dml.mathdoc.fr/item/05379365}
}
Sudoplatov, S.V. On the number of countable models of complete theories with finite Rudin-Keisler preorders.. Sibirskij Matematicheskij Zhurnal, Tome 48 (2007) pp. 417-422. http://gdmltest.u-ga.fr/item/05379365/