>To-date there is no public research on fundamental aspect of Monero
What about these papers?
"An Empirical Analysis of Linkability in the Monero Blockchain" - https://arxiv.org/abs/1704.04299
"A Traceability Analysis of Monero’s Blockchain" - https://link.springer.com/chapter/10.1007/978-3-319-66399-9_...