Direct Quantitation of Psilocybin and Psilocin by One-Dimensional 1H and 31P qNMR in a revived Greek specimen of Psilocybe cyanescens - Magiatis P; Dadiotis E; Antonopoulos R K; Ioannidis K; Mitsis V; Melliou E; Gonou-Zagou Z (Planta Medica, 2022)