Avakyan, H.,
Loukantchevsky, M., &
Kostadinov, N.
(2001).
Computer System Architecture for '140' Phone Call Processing. // <I>Procееdings<D> of the International Conference on Computer Systems and Technologies CompSysTech' 2001, Sofia, 21-22 June, 2001.- Rousse : Avangard Print Ltd. Rousse, 2001, p. III.10-1 - III.10-4..