Proper noun
Kondratieff
A surname from Russian.
In 1939, Joseph Schumpeter suggested naming the cycles "Kondratieff waves" in his honor. Source: Internet
A specific modification of the theory of Kondratieff cycles was developed by Daniel Šmihula. Source: Internet
Leo A. Nefiodow shows that the fifth Kondratieff ended with the global economic crisis of 2000-2003, while the new, sixth Kondratieff started simultaneously. Source: Internet