Lars Stixrude and Carolina Lithgow-Bertolloni, Mineralogy and elasticity of the oceanic upper mantel: Origin of the low-velocity zone (PDF), in J Geophys. Res., vol. 110, 2005, p. B03204, DOI:10.1029/2004JB002965 (archiviato dall'url originale il 30 agosto 2011).
«The first possible explanation is that the Lehmann is not a global feature...the Lehmann is more prevalent under continents and may be absent under all or most of the oceans.»