Update README.md

README.md

@@ -4,7 +4,7 @@ Application of the probabilistic flux variation gradient (PFVG) method, as prese
 in [*"Disentangling the optical AGN and host-galaxy luminosity with a probabilistic flux variation gradient"*](https://doi.org/10.1051/0004-6361/202141710). An implementation of the method can be found here [ProbabilisticFluxVariationGradient.jl](https://github.com/HITS-AIN/ProbabilisticFluxVariationGradient.jl).
 
 In the following examples we apply the PFVG method on observations from the source
-3C120. The light curves for 3C120 have been taken from the published work of [*Ramolla et al. (2018)*](https://www.aanda.org/articles/aa/pdf/2018/12/aa32081-17.pdf).
+3C120. The light curves for 3C120 have been taken from the published work of [*Ramolla et al. (2018)*](https://doi.org/10.1051/0004-6361/201732081).
 
 
 # Installation