Concerning accurate determination of self-oscillations of piece-wise intermittent systems

It is shown that when determining self-oscillations of piece-wise intermittent systems with the help of the step-by-step method one has to deal with the particular case when the determinant of the linear system, which is designed for findingi initial conditions corresponding to self-oscillation behaviour, is equal to zero. Some additional corellations take place permitting to considerably simplify transcendental equations of periods.