Which one was published first, 'On Control Lyapunov-Razumikhin Functions, Nonconstant Delays, Nonsmooth Feedbacks, and Nonlinear Sampled-Data Stabilization' or 'EXIT charts analysis of a root-like bit mapping for LDPC-coded QAM systems'?
Between 'On Control Lyapunov-Razumikhin Functions, Nonconstant Delays, Nonsmooth Feedbacks, and Nonlinear Sampled-Data Stabilization' and 'EXIT charts analysis of a root-like bit mapping for LDPC-coded QAM systems', which paper was published earlier?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/tac/Pepe17> <https://dblp.org/rdf/schema#yearOfPublication> ?x . <https://dblp.org/rec/journals/dsp/SmithPU17> <https://dblp.org/rdf/schema#yearOfPublication> ?y . BIND(IF(?x < ?y, <https://dblp.org/rec/journals/tac/Pepe17>, <https://dblp.org/rec/journals/dsp/SmithPU17>) AS ?answer) }
<https://dblp.org/rec/journals/tac/Pepe17> <https://dblp.org/rec/journals/dsp/SmithPU17>