1. "Determinacion Numerica De La Rigidez Angular De Una Viga " by H. C. Reggini Centro Est. de Ing. Serie 4.31 No. 4/8 Argentine.
2. Vibraciones De Flexion De Una Viga," by H. C. Reggini;Centro Est. de Ing.,1959
3. Stahlbeton - Tragerrostdecken," by J. Szab 6;Bautechnik,1957
4. Die Berchnung von Brucken - Tragerrosten," by J. Szabo;Stahlbau,1958
5. "Application of the Matrix Theory to the Calculation of Continuous Beams " by J. Szabo Acta Technica Scientiarum Hungaricae Tomus XVI fase. 1-2 1957.