1. Jonker, J.B.; Dynamics of Spatial Mechanisms with Flexible Links. Delft University of Technology, Lab. Eng. Mech., 1985, WTHD 171.
2. Besseling, J.F., Derivatives of Deformation Parameters for Bar Elements and their use in Buckling and Post-buckling Analysis. Comp. Meths.Appl. Mech. Eng12 (1977) pp. 7–124.
3. Besseling, J.F., Jonker, J.B., Schwab, A.L.; Kinematics and Dynamics of Mechanisms. Delft Progress Report 10 nr. 2 (1985) pp. 160–172.
4. Riks, E.; An Incremental Approach to the Solution of Snapping and Buckling Problems. Int. J. Solids and Structures, Vol. 15 (1979) pp. 529–551.
5. Ramm, E.; Strategies for Tracing the Nonlinear Response near Limit Points, In: Nonlinear Fin. El. An. in Str. Mech. Eds. W. Wunderlich, E. Stein, K.J. Bathe, Springer-Verlag (1980) pp. 63–89.