i don't know how to answer part of your question, but i'm sure some one else here will. as far as literature that might give you an anwer, there is an article by paul shrader called NOTES ON FILM NOIR (1972), where he discusses TOUCH OF EVIL ending the noir cycle. the article was reprinted in a book called WAKE IN THE DARK, you can get it through your local pubic library (this might be the same arrticle where he discusses KANE starting the look on noir. that's a hell of a concept).
as far as essays on TOUCH OF EVIL go, the best one i can recomend was written be stephen heath, also available from your local pubic library. it's a leghty essay that ran in 3 consecutive magazine issues:
SCREEN vol. 16, no. 1, Spring 1975,
SCREEN vol. 16, no. 2, Summer 1975
SCREEN vol. 17, no. 1, Spring 1976
the AWAKE IN THE DARK book has some articles by pauline kael. they are extremely dangerous and should be avoided at all cost.
before reading the stephen heath articles, put on big rubber boots. it's like mining for gold; you will come across a lot of shit before you reach the nuggets but when you reach the nuggets they will be incredible. then the more you read it the more you realize that some of the stuff you thought was shit the first time around, was really a nugget that passed you by. well worth getting. i think heath went where no man had gone before on TOUCH OF EVIL, and still hasn't. these heath articles are eunique, exciting, incredibly informative, and will give you a ton of new angles on the film once you study them carefully.
pick and choose carefully what you adopt into your essay from heath. some of the stuff i adopted and then expanded on i posted here and the members were ready to strap me to a stake and burn me as a witch.