``. . . anyone can do any amount of work, provided it isn't the work he is supposed to be doing at that moment." -- Robert Benchley, in Chips off the Old Benchley, 1949
P. Ziegler, K. Dittrich, и E. Hunt. Proceedings of the 2008 IEEE 24th International Conference on Data Engineering Workshop, стр. 250--253. Washington, DC, USA, IEEE Computer Society, (2008)