A handy tool for history keeping of Geant4 tracks - J4HistoryKeeper. - Sumie Yamamoto; Keisuke Fujii 003; Akiya Miyamoto (Comput. Phys. Commun., 2009)

Kalman-filter-based track fitting in non-uniform magnetic field with segment-wise helical track model. - Bo Li; Keisuke Fujii 003; Yuanning Gao (Comput. Phys. Commun., 2014)