1. CONNECTION BETWEEN QUARK-MODEL EIGENSTATES AND LOWENERGY SCATTERING R.L. JAFFE, F.E. LOW:PHYS.REV.D19(1979)2105 2.4.1; 2.5.1
2. ELASTIC PARTIAL WAVE ANALYSIS E. PIETARINEN:HELSINKI PREPRINT HU-TFT-78-13 2.1.7
3. THE INTERACTION OF HADRONS H. PILKUHN;NORTH-HOLLAND(1967) A; 2
4. RELATIVISTIC PARTICLE PHYSICS H. PILKUHN;SPRINGER(1979) A; 2
5. BARYON RESONANCES A. BARBARO-GALTIERI IN"ADVANCES IN PARTICLE PHYSICS", VOL.2,P.175;EDS.R.L. COOL, R.E. MARSHAK;INTERSCIENCE (1968) 2.4.1