www.springerpub.com/

Hard to navigate, book is as well.

The material wasn't useful at all, if I could get a refund I would

Poor Customer Service!!!!

Website is terrible so I cannot log in to my account to access book. Takes forever to load (literally forever- the wheel spins for over an hour to no effect). Would never recommend and I want a refund

Took a month to get the book without any notification on when it would arrive.