1. Roland F, Reinert T. Laser welded sandwich panels for the ship building industry. In lightweight construction—latest developments. 24–25 February 2000, London, SW1. p. 1–12.
2. Romanoff J, Kujala P. The effect of laser weld's dimensions on transverse shear stiffness and stress state of steel sandwich panels. In: Sixth international conference on sandwich structures, Ft. Lauderdale, 31 March–2 April 2003, p. 895–909.
3. Kozak J. Strength tests of steel sandwich panels. In: Proceedings of the ninth symposium of ships and other floating structures. Luebeck-Travemuende, Germany, 2004, pp. 902–906.
4. The stiffness of laser stake welded T-joints in web-core sandwich structures;Romanoff;Thin-Walled Struct,2007
5. Romanoff J, Kujala P. Optimum design for steel sandwich panels filled with polymeric foam, In: Proceedings from sixth international conference on fast sea transportation, vol. 3. Southampton, 2001, p. 197–205.