These ponderings attempt to let themselves be appropriated by the event. (Beiträge zur Philosophie (Vom Ereignis), Martin Heidegger, 1936–38/1989)
https://www.borderlinepersonalitydisorder.org/wp-content/uploads/2013/11/NPD-Basic-Second-Edition-In-Print-03-2016.pdf
https://www.researchgate.net/profile/Igor-Weinberg/publication/237011577_Narcissistic_Personality_Disorder_Progress_in_Recognition_and_Treatment/links/0deec51ae642a0259c000000/Narcissistic-Personality-Disorder-Progress-in-Recognition-and-Treatment.pdf?origin=publication_detail (2013)
https://youtu.be/DpHcNMFcEtA (2018)
See also
https://n-continuum.blogspot.com/2015/01/npd-basics-by-dr-elsa-ronningstam.html