Time-signals.

The world of visual time signals for mariners = time balls, time guns, time lights and other signals / by: (Electronic resources)

Continuous and discrete-time signals and systems by: (Electronic resources)

Signal, Speech and Image Processing.

Chronometers.

Space Studies.

Time- Systems and standards.

Computational Intelligence.

History of Science.

History of Physics and Astronomy.

Machine Learning.

Nautical instruments.

Time-signals.