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Abstract:
Gravitational waves produce a time delay between the different images of a gravitational lens. The measurements of the time delay in the gravitational lens 0957±561 put new limits on the amplitude of low-frequency gravitational waves h<2×10-5[ν/(3×10-18 Hz)] in the frequency range 3×10-18 Hz<ν. Future measurements of the time delay in other gravitational lenses may permit this limit to be improved.