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\bibitem{Heyne_etal2019} {\textquotedblleft}\textit{A route towards the fabrication of 2D heterostructures using atomic layer etching combined with selective conversion}{\textquotedblright}. Heyne MH, Marinov D, Braithwaite N, Goodyear A, de Marneffe J-F, Cooke M, Radu I, Neyts EC, De Gendt S, 2D materials \textbf{6}, 035030 (2019).   http://doi.org/10.1088/2053-1583/AB1BA7

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