Anne Speckhard (US Academic) has written fairly extensively on this. Probably the best articles of hers on the subject are:

Speckhard, A, and K Ahkmedova. "The Making of a Martyr: Chechen Suicide Terrorism." Studies in Conflict & Terrorism 29, no. 5 (2006): 429-92, available @: http://www.annespeckhard.com/publica...ing_Martyr.pdf

and

Speckhard, A, and K Akhmedova. "Black Widows: The Chechen Female Suicide Terrorists." Female Suicide Terrorists (2005).
available @:
http://www.uwed.uz/library/files/black_widows.pdf

There's also a reasonably good book by Rosemarie Skaine called, orignally enough, 'Female Suicide Bombers'.