  We search for doubly charged scalar bileptons via $
\text{e}^{-}\text{e}^{-}\to \mu^{-}\mu^{-}$ and $ \text{e}^{-}\text{e}^{-}\to
\text{e}^{-}\text{e}^{-}$ processes at linear collider energies by considering
initial and final state electromagnetic radiative corrections (ISR, FSR).
Moreover, smeared cross section is used for finite energy resolution. We show
that ISR+FSR and smearing reduce cross sections remarkably depending on the
smearing parameter due to narrow decay width of bileptons. We obtain realistic
discovery contours of couplings and masses for the lepton flavour conserving
and violating processes.
