As shown on many occasions, the q-Gaussians are suitable for fitting Raman spectra (by examples proposed in SSRN to the SERS cases, for instance). For applying the q-Gaussians to asymmetric bands, we can define also an asymmetric function, turning the Breit-Wigner-Fano (BWF) function into a q-BWF function . Let us write the BWF as follow: