Numerical and experimental investigation on the collision resistance of the X-core structureEhlers, Sören; Tabri, Kristjan; Romanoff, Jani; Varsta, PetriShips and offshore structures2012 / p. 21-29 : ill Numerical and experimental investigation on the collision resistance of the X-core structureEhlers, Sören; Tabri, Kristjan; Romanoff, Jani; Varsta, Petri5th International Conference on Collision and Grounding of Ships : June 14th - 16th 2010 Espoo, Finland2010 / p. 18-24 : ill