Theory of unitarity bounds and low-energy form factors Gauhar Abbas, B. Ananthanarayan, I. Caprini, I. Sentitemsu Imsong and S. Ramanan Eur. Phys. J. A, 45 3 (2010) 389-399 Published online: 20 July 2010 DOI: 10.1140/epja/i2010-11010-5