Spectroscopy and Chemometrics for Conformity Analysis of e-Liquids: Illegal Additive Detection and Nicotine Characterization, Akhtar, Zeb, Barhdadi Sophia, de Braeckeleer Kris, Delporte Cedric, Adams Erwin, and Deconinck Eric , Chemosensors, Volume 12, Issue 1, (2024)