For citations:

Toporkov V.P., Velichko L.N., Shiyanova A.E., Kedrova O.V. The Tendency of Plague Morbidity Dynamics in the World. Problems of Particularly Dangerous Infections. 2008;(3(97)):22-25. (In Russ.) https://doi.org/10.21055/0370-1069-2008-3(97)-22-25