1. G. Grayer, B. Hyams, C. Jones, P. Schlein and P. Weilhammer, W. Blum, H. Dietl, W. Koch, E. Lorenz, G. Lütjens, W. Männer, J. Meissburger, W. Ochs and U. Stierlin, High statistics study of the reaction π−p → π+π−n — apparatus, method of analysis, and general features of results at 17 GeV/c, to be published.
2. W. Ochs, A method for determination of density matrix elements and amplitudes of onepion exchange reactions, preprint of the Max-Planck-Institut für Physik und Astrophysik, to be published.
3. C.D. Froggatt and D. Morgan, Model amplitude analysis of π−p → π+π−n, CERN preprint.
4. Splitting of the cross-section into natural and unnatural parity exchange contributions for quasi-two-body reactions