Resetting the epigenome happens first, telomere elongation later

https://www.researchgate.net/profile/Katerina_Strati/publication/23988255_Telomeres_Acquire_Embryonic_Stem_Cell_Characteristics_in_Induced_Pluripotent_Stem_Cells/links/02e7e51ac67b2e622d000000.pdf

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0008124

Transposable elements set free by dna demethylation
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3849598/

DNA meth and histone modification

Good link on DNA methylation
https://vetbiotech.um.ac.ir/parameters/vetbiotech/filemanager/new_admin/Selected%20Articles/series_14/annurev-biochem-052610-091920.pdf

Mechanistic link between PRC2 and DNA methylation, PRC2 is upstream of DNA meth.
https://pdfs.semanticscholar.org/1386/a6f85e872f6bb69f260c7a12e738bda2f9e2.pdf