1. The HERA polarimeter and the first observation of electron spin polarization at HERA
2. First observation of transverse beam polarization in LEP
3. Y.B. Bolkhovityanov et al., The polarized electron source at NIKHEF, in: W. de Jager et al. (Eds.), Proc. 12th Int. Symp. on High Energy Spin Physics, World Scientific, Singapore, 1996, pp. 730–732.
4. Ya.S. Derbenev, A.M. Kondratenko, Sov. Phys.-JETP 37 (1973) 968.
5. Ya.S. Derbenev, A.M. Kondratenko, Sov. Phys.-Dokl. 20 (1975) 830.