The Position and the Residues of the ${{\mathit \Delta}}$ Resonance Pole in Pion Photoproduction
MIROSHNICHENKO
1979
SJNP 29 94
Position and Residue of the Pole in the $\mathit M$1 +(3/2) Amplitude of the Reaction ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}}$