Quarkonia production in pPb collisions

<!--HTML-->We present LHCb results on quarkonia production in proton-lead collisions, using the data collected in 2016 at sqrt(s_NN) = 8.16 TeV. Measurements are performed in the forward rapidity region (pseudorapidity between 2 and 5), covering both forward (pPb configuration) and backward (Pbp configuration) rapidities. Measurements for charmonium states include prompt and from-b-decay components which are disentangled. The large increase of the data sample, with respect to the 5 TeV sample collected in 2013, allows a remarkable improvement in the accuracy of the studies of nuclear matter effects.