See https://www.logos.com/products/search?q=kasemann
Or google 'site:community.logos.com kasemann'
Or http://en.wikipedia.org/wiki/Ernst_Käsemann
Here's a picture from a top-secret photo album on Google:

Notice the dark mysterious glasses. He seems to float in and around everyone in Logos.com. People battle him. Quote him. Even suggest his importance as a major 20th century NT scholar. Even worse, a certain renegade out-of-control scholar from Moody uses his methods. Yes, it's true!
But who is he? Really?
I read a review of his Romans commentary in Logos (yes ... Logos even has book reports about him). So I set out to purchase it, since it hints at what some (me) now call 'Geological Theology'.
Well, not my problem. I was surprised Amazon has him for only $14 LESS than in 1980! Used. Inflation in the book world is horrendous! http://www.amazon.com/Commentary-Romans-Ernst-Käsemann/dp/0802808603
EDIT: After I paid my re-destined Logos-bucks to Amazon, I feel empowered to quote one of the reviewers (I liked the german NASCAR image).
'With Ernst Käsemann's Romans, you get more than a gentle, reassuring explication or updating of a foundational, two thousand year old letter. With Käsemann you ride shotgun to a guy who knows the track and takes the curves at speed.'