['The', 'aim', 'of', 'this', 'paper', 'is', 'to', 'provide', 'a', 'complete', 'assignment', 'of', 'the', 'vibrational', 'spectra', 'of', 'l', '-', 'cysteine', 'in', 'both', 'the', 'orthorhombic', 'and', 'monoclinic', 'forms', 'by', 'the', 'use', 'of', 'a', 'combination', 'of', 'computational', 'and', 'experimental', 'methods', '.']