'Twas published lecture: beneath us was renovated rooms and every 10 minutes, interrupted the course of lectures on the operating noise of the drill. At the end wanted to shoot myself. Easy confusion eventually offset by a greater duration and number of the nuances of personal practice. But it's better we would have done without repairing the floor below. The very lecture was devoted to more theoretical aspects of working with a reference, and specific examples are already in the next lecture is also devoted to the links in the promotion of.