Ljuba Tarvi's newbook, Modern Fantasies on Love versus Classical Romances: On the Success of Fifty Shades of Grey, 

was published on 2023-07-17. Chapter 11 analyzes Onegin's killing of Lenski on the basis of Nabokov's Commentary.  https://www.cambridgescholars.com/product/978-1-5275-1758-5