Towed artillery vs. SP Artillery's survivability

[Aeraaa]

A HERO report (a bit old, so I dont know reliable nowadays) that covers the subject of artillery casualties in WW2 (US part mostly), Korean War and 1973 Arab-Israeli war. The interesting observation one can see from the article is that SP artillery is actually more vulnerable to towed artillery, although it offers better crew survivability.

link: http://www.dupuyinstitute.org/pdf/055.pdf