1. Abashian A et al (2002) Nucl Instrum Methods A479:117, Belle Collaboration
2. Abramowitz M, Stegun IA (eds) (1965) Handbook of mathematical functions, section 25.5. Dover, Mineola
3. Abreu P et al (1996) Nucl Instrum Methods A378:57, DELPHI Collaboration
4. Achenbach P et al (2008) Nucl Instrum Methods A593:353
5. Adam W et al (2005) J Phys G: Nucl Part Phys 31:N9