TY - JOUR T1 - Nonuniqueness in optical tomography: relevance of the P1 approximation. JO - Opt Lett PY - 1999/12/01 AU - Matcher SJ ED - DO - DOI: 10.1364/ol.24.001729 VL - 24 IS - 23 SP - 1729 EP - 1731 Y2 - 2024/10/23 ER -