Brignolas, F., B. Lacroix, F. Lieutier, D. Sauvard, A. Drouet, A. Claudot, A. Yart, A. Berryman, and E. Christiansen. 1995. Induced responses in phenolic metabolism in two Norway spruce clones after wounding and inoculations with Ophiostoma polonicum, a bark beetle-associated fungus . Plant Physiology 109:821-827.