Near dipole-dipole effects in lasing without inversion: An enhancement of gain and absorptionless index of refractionRemoveJonathan P. Dowling and Charles M. BowdenPhys. Rev. Lett. 70, 1421 (1993)
"Soft" Hard Scattering in the Teraelectronvolt RangeRemoveT. K. Gaisser and F. HalzenPhys. Rev. Lett. 54, 1754 (1985)
