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. 2020 May 22;141:103974. doi: 10.1016/j.jmps.2020.103974

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Fig. 15 — Behavior of ξ/ξ⁰vs h/h₀ using η as parameter. Here $η^{*} = 1.07$ represents a basal value and $Δ η = 2.06$ (see Pollaci, 2016).