Help finding a peer reviewed journal

[Phantaja]

In my physiology class, one of the questions read as follows:

In the female, body temperature is increased at the time of ovulation by which of the following:

FSH
LH
Progesterone
Estrogen
GnRH


The professor says progesterone, I said estrogen, but now I'm realising that we're both wrong. There's a problem with the wording (I think). Body temperture is increased AFTER ovulation, isn't it? At least, that's my understanding from charting. If I'm right, do any of you know a peer reviewed journal or paper that I could site. I'm finding the info on fertilityfriend.com and babyhopes.com, but somehow I doubt that Dr. Bigshot would accept those sources.

[jenneology]

Do you have a copy of Taking Charge of Your Fertility? I bet the book references an article you can use. I'd go look in my own, but its in a box, since we are in the middle of a move. :-S