TY - CHAP T1 - Introduction UR - http://dx.doi.org/10.1007/s12126-999-1014-4 PY - 1999/01/01 AU - Marshall VW AU - Walker A ED - DO - DOI: 10.1007/s12126-999-1014-4 PB - Springer Science and Business Media LLC VL - 25 SP - 17 EP - 23 Y2 - 2025/05/07 ER -