SELECT * FROM Coeff cc WHERE cc.IdWork = " + id + " and cc.Version = (
SELECT Min(c.Version) FROM Coeff c WHERE c.IdMonth = cc.IdMonth and c.IdWork = cc.IdWork and c.IdYear = cc.IdYear and c.Version >= " + Version);

DetachedCriteria subquery = DetachedCriteria.For(typeof(Coeff), "c");

subquery.Add( Expression.EqProperty( "c.IdMonth", "cc.IdMonth" ) )
             .Add( Expression.EqProperty( "c.IdWork", "cc.IdWork" ) )
             .Add( Expression.EqProperty( "c.IdYear", "cc.IdYear" ) )
             .Add( Expression.Gt( "Version", Version)
             .SetProjection( Projections.Min( "Version" ) );

ICriteria crit = session.CreateCriteria(typeof(Coeff), "cc");

crit.Add( Expression.Eq( "IdWork", id ))
    .Add( Subqueries.PropertyGe( "Version", subquery )