Jakubowski R, Stąpor K..  2001.  Feature-based Modelling System Based on Sweeping Operation Technique. Bulletin of the Polish Academy of Sciences Technical Sciences. 49:647–663.

Jakubowski R, Flasiński M..  1999.  Structural approach to extraction and analysis of 3D features representing machining operations. Archiwum Informatyki Teoretycznej i Stosowanej. 11:249–272.

Jakubowski R, Stąpor K..  1999.  A Structural Approach to Representation of 3D-objects. Bulletin of the Polish Academy of Sciences Technical Sciences. 47:175–189.

Jakubowski R, Stąpor K..  1999.  Structural Method in Perceptual Organization of 2D-curve Detection, Representation and Analysis. Bulletin of the Polish Academy of sciences Technical Sciences. 47:309–324.

Jakubowski R, Stąpor K..  1999.  Structural/Syntactic Methods in Perceptual Organization of Shape Modelling and Analysis. Archiwum Informatyki Teoretycznej i stosowanej. 11:133–155.