2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/183561Pulsars can be used to search for stochastic backgrounds of gravitational waves of cosmological origin within the very low frequency band (VLF), $10^{-7}$ to $10^{-9}$ Hz. We propose to construct a special 50 m radio telescope. Regular timing measurements of about 10 strong millisecond pulsars will perhaps allow the detection of gravitational waves within VLF or at least will give a more stringent upper limits.5 pages, no figure, Latex fileAstrophysicsGeneral Relativity and Quantum Cosmologytext