During his high school years, Entov won multiple awards at the all-Union Physics Olympiads.
[citation needed] The same year he began his study at the Mechanical Department of the Moscow Institute for Oil and Gas.
In 1961 he began his graduate study with Professor I.A.Charny, and in 1965 he successfully defended his dissertation thesis “Non- stationary problems of the non-linear filtration”, earning the title of “Candidate of Science" (roughly equivalent to PhD).
In 1972 he was awarded the title of Doctor of Sciences for his dissertation thesis "Hydrodynamic theory of filtration of anomalous fluids", completed at the Institute for Problems in Mechanics.
He worked as a scientific supervisor at the Laboratory of Applied Continuum Mechanics until the last years of his life.