Skubisz G., Kravtsova T., Velikanov L.:  Analysis of the strength properties of pea stems. (2007 r.) International Agrophysics 2007, 21, 2, 189-197 

Skubisz G., Kravtsova T., Velikanov L.:  Analysis of the strength properties of pea stems. (2005 r.) Institute of Agrophyscis PAS, Lublin, "Review of Current Problems in Agrophysics" 2005, Chapter 2, Physics in Plant Science, 217-222