Below is an interesting paper about mass extinctions.
Racki, G. 2012. The Alvarez impact theory of mass extinction;
limits to its applicability and the "great expectations syndrome".
Acta Palaeontologica Polonica 57 (4): 681-702.
https://www.app.pan.pl/archive/published/app57/app20110058.pdf
https://www.app.pan.pl/article/item/app20110058.html
https://www.researchgate.net/publication/239739714_The_Alvarez_impact_theory_of_mass_extinction_limits_to_its_applicability_and_the_great_expectations_syndrome
https://www.researchgate.net/profile/Grzegorz_Racki