TY - RPRT TI - Extended multiplicative signal correction and spectral interference subtraction: new preprocessing methods for near infrared spectroscopy. AU - H Martens AU - E Stark PY - 1991 DO - 10.1016/0731-7085(91)80188-f UR - https://pubmed.ncbi.nlm.nih.gov/1790182/ ID - 1790182 ER -