Int J Parasitol, Vol. 28, No. 12. (1998), pp. 1939-1941.
Trends Ecol Evol, Vol. 21, No. 7. (2006), pp. 381-385.
Parasitology, Vol. 133, No. Pt 1. (2006), pp. 33-41.
Int J Parasitol, Vol. 35, No. 3. (2005), pp. 315-327.
Parasitology, Vol. 108 ( Pt 2) (1994), pp. 185-194.
Int J Parasitol, Vol. 28, No. 4. (1998), pp. 571-577.
J Helminthol, Vol. 80, No. 2. (2006), pp. 159-174.
J Helminthol, Vol. 80, No. 2. (2006), pp. 137-149.
J Helminthol, Vol. 76, No. 3. (2002), pp. 249-259.
Nature, Vol. 421, No. 6923. (2003), pp. 628-630.
Parasitology, Vol. 124 Suppl (2002), pp. S137-51.
J Parasitol, Vol. 82, No. 3. (1996), pp. 449-453.
Parasite, Vol. 8, No. 4. (2001), pp. 275-287.
Int J Parasitol, Vol. 35, No. 7. (2005), pp. 705-716.
Trends Ecol Evol, Vol. 21, No. 7. (2006), pp. 381-385.