Another paper worth checking out is a short note by Folmer Bokma that represents one of the first applications of Approximate Bayesian Computation in comparative methods. If you haven't heard of ABC yet - you will. There is another remarkable aspect of the Bokma paper - let me just quote the funding section:
The author awards SEK 10,000 to the first who provides an analytical form of φ.
According to google currency converter that's about USD $1500, which would just about pay for that R. A. Fisher tattoo you've been wanting.
On another note, please watch this: