Founder of ANPEIP in the 70s it was the French psychologist through which, by dint of hard & tenacity for over 20 years, the Ministry of Education has considered what she calls since the famous Delaubier report, EIP (Intellectually Precocious Children).
So I highly recommend this book which is a mine of information, and the 2nd written by the same author: "Handbook of gifted child: Reprérer and assist gifted children", very regularly updated every 2;) .. . rather than get lost in some more recent books, but especially little Successful & settling for ill enough to repeat what these two eminent specialists have better formulated in their day!