Install the newest versions of the CTRM, MittagLeffleR and rticles
packages to get the paper (article_springer.Rmd) to compile:
devtools::install_github("strakaps/CTRM")
devtools::install_github("strakaps/MittagLeffleR")
devtools::install_github("rstudio/rticles")
library(CTRM)
library(MittagLeffleR)
library(rticles)