SUPERHEAVY DARK MATTER AND ULTRAHIGH-ENERGY COSMIC RAYS Article Dick R., Hopp K.M., Wunderle K.E. Canadian Journal of Physics. Canadian Science Publishing. Vol. 84. 2006. P. 537-543
ULTRA-HIGH-ENERGY COSMIC RAYS FROM COLLISIONAL ANNIHILATION REVISITED Article Dick R., Hopp K.M., Wunderle K.E. Canadian Journal of Physics. Canadian Science Publishing. Vol. 83. 2005. P. 1141-1149