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Experimental grazing incidence X-ray diffraction (GIXD; wavelength λ = 0.9998 Å; incidence angle αi = 0.13°) patterns of all three polymorphs of paracetamol stabilized on SiOx (upper row) with the corresponding theoretical indexation (lower row) with form I having a powder character and form II and form III having a 001 or 021, respectively, contact plane.
