Jane (a blogger) recommends this book: The physics of conciousness by Evan Harris Walker
Also Alison recommends these books on auras
Your Aura and Your Keynote by Julia Seton Sears copyright 1912 .
Auras: An Essay on the Meaning of Colors by Edgar Cayce
Your Aura and Your Chakras by Karla McLaren
Auras See Them in Only 60 Seconds Mark Smith
Auras and Chakras Fiona Toy