@article{05381045, title = {A decomposability criterion for elementary theories.}, journal = {Sibirskij Matematicheskij Zhurnal}, volume = {49}, year = {2008}, pages = {189-192}, zbl = {1164.03315}, language = {en}, url = {http://dml.mathdoc.fr/item/05381045} }
Ponomarëv, D.K. A decomposability criterion for elementary theories.. Sibirskij Matematicheskij Zhurnal, Tome 49 (2008) pp. 189-192. http://gdmltest.u-ga.fr/item/05381045/