• FTIR and Raman spectroscopic studies of sulphate substituted apatitesTõnsuaadu, Kaia; Villain, F.; Peld, Merike; Gruselle, M.The First International Conference on Advanced Vibrational Spectroscopy : ICAVS-1 : August 19-24, 2001, Turku, Finland : book of abstracts and program2001 / p. P8.93