(en) Jack Merrill, « Atlantic groups as primary Niger-Congo branches (slide presentation) », Diedrich Westermann-Workshop (West-central African linguistic history between Macro-Sudan Belt and Niger-Congo: commemorating Diedrich Westermann’s legacy and the 100th anniversary of the Berlin professorship for African languages), 4-6 November 2021, Humboldt University of Berlin., (lire en ligne)
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(en) Guillaume Segerer, « A new, innovation-based classification of Atlantic languages », ACAL 47, Berkeley, mar 23-26, 2016. (lire en ligne)