TY - JOUR TI - Introduction to response to intervention: What, why, and how valid is it? U1 - Recommended JF - Reading Research Quarterly AU - FUCHS, DOUGLAS AU - FUCHS, LYNN S. DO - 10.1598/RRQ.41.1.4 PY - 2006-01-03 EP - 99 SP - 93 SN - 1936-2722 IS - 1 VL - 41 ER -