JCP_1474JCP_1477JCP_1478JCP_1480JCP_1483JCP_1485JCP_1487JCP_1488JCP_1490JCP_1493JCP_1495JCP_1500JCP_1502JCP_1503JCP_1504JCP_1506JCP_1507JCP_1519JCP_1520JCP_1523