A covariant approach to the partial wave analysis of the hadron reactions

The Bonn-Gatchina approach for the partial wave analysis  of hadron reactions is presented.
This approach is very suitable for the analysis of the hadron-hadron, gamma-nucleon collision reactions as well as for the decay of heavy hadrons into multi-partical final states.
The examples of the partial wave analysis of the different experimental data in framework of this approach are shown and discussed.