- A base class which implements INotifyPropertyChanged by Josh Smith (author of Advanced MVVM)
- Is INotifyPropertyChanged an anti-pattern? by Neil Mosafi
- INotifyPropertyChanged Is Obsolete by Michael L. Perry
In all fairness, Rob's implementation in the book is perfectly adequate for teaching the subject of WPF. Trying to tackle the topic of INotifyPropertyChanged would certainly have detracted from the main subject of the book and led to further confusion for the typical reader.