\rmDs/\rmDzero  (left) and \rmLambdaC/\rmDzero  (right) yield ratios as a function of \pT{} in pp collisions and in the 10\% most central \PbPb{} collisions at \sqrtSnn = 5.02 \tev\ compared to different model calculations, namely Catania , TAMU , POWLANG , and the GSI-Heidelberg statistical hadronisation model .