In addition, the products George Varghese's research work were implemented by different network device manufactures including Cisco, Juniper, Procket etc. Lot of research papers can be found in his homepage.
I have read the book and liked it very much.. I write drivers and applications on routers of a reputed company and encounter the problems mentioned in the book almost on a day-to-day basis. The algorithms and case studies in book are really good and they are valid in the present state of network devices. I would recommend this book any engineer working on networking devices and applications.