TY - RPRT TI - Solution to spectroscopy challenge 9. AU - Roberto Martínez-Alvarez AU - Antonio Herrera AU - Pedro Ramiro PY - 2005 DO - 10.1007/s00216-005-3268-3 UR - https://pubmed.ncbi.nlm.nih.gov/15912396/ ID - 15912396 ER -