Question about Microwave Networks: Wave Approach

hello,

recently I came across the following book: Computer-Aided Analysis, Modeling and Design of Microwave Networks: The Wave Approach, Janusz A. Dobrowolski, Wojciech Ostrowski, Artech House. Does anyone have some experience with the techniques described in this book? I'd like to know if these techniques are useful in designing microwave circuits or not. A short description about the techniques/tutorial would be of great help in determining the usefulness. I'd like to know more about this topic, if the book is ok, I will probably buy it.

Thanks.

Best regards.