TY - JOUR T1 - Ring currents in the porphyrins: a four-orbital model. JO - Chemphyschem PY - 2002/01/18 AU - Steiner E AU - Fowler PW ED - DO - DOI: 10.1002/1439-7641(20020118)3:1<114::AID-CPHC114>3. VL - 3 IS - 1 SP - 114 EP - 116 Y2 - 2024/12/26 ER -