Methods for extracting nucleon resonance parameters from experimental data are reviewed. The formalism for the description of exclusive reactions of meson photo- and electroproduction off nucleons is discussed. Recent experimental data on exclusive meson production in the scattering of electrons and photons off protons are analyzed.
13.60.Le Meson production
$^1$Department of Physics, Moscow State University, Moscow, 119991 Russia
$^2$Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, United States
$^3$Department of Physics and Astronomy, University of South Carolina, Columbia, SC 29208, United States
$^4$Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119991 Russia