Recoil-induced effects in a bidirectional ring laser N. Piovella, V. Villa, R. Bonifacio, B. W.J. McNeil and G. R.M. Robb Eur. Phys. J. D, 17 3 (2001) 365-384 Published online: 15 December 2001 DOI: 10.1007/s100530170011