WSJ has a good summary of the moves that Sephora has made to make it into such a success.
(Luke Froeb) considers the following as important: 10. Strategy-the quest to slow profit erosion
This could be interesting, too:
(Michael Ward) writes Product Differentiation
(Luke Froeb) writes Why is Bezos such an extraordinary manager?
(Luke Froeb) writes Costco’s profit comes mostly from membership fees
(Luke Froeb) writes Book Review: Chaos Monkeys: