You seem to be attempting to access an item that has been removed from the repository.
There is a later version of the item you are trying to access:
Pasquale , L., Salehie, M., Ali, R., Omoronyia, I. and Nuseibeh, B., 2012. On the Role of Primary and Secondary Assets in Adaptive Security: An Application in Smart Grids. In: 7th International Symposium on Software Engineering for Adaptive and Self-Managing Systems (SEAMS'12), 4-5 June 2012, Zurich, Switzerland. (In Press)