1. Nielsen J. “ Vehicle dynamics of an orewagon ” (in Swedish G[adot]ngdynamisk analys av malmvagn), A pilot study, Prosolvia PK/9426 , Sweden , 1994 .
2. DEsolver AB “GENSYS User's Manual” (in Swedish GENSYS Användarhandledning), Release 9510, Östersund , Sweden , 1995 .
3. Unconventional Bogie Designs - Their Practical Basis and Historical Background
4. Andersson E. et al. “ Vehicle-track interaction ” ( in Swedish Jarnv'agsfordons dynamik 96/97 ), Course 4B1312, Division of Railway Technology, Department of Vehicle Engineering, Royal Institute of Technology (KTH) , Stockholm , Sweden , 1997 .