TY - JOUR A1 - Bollaerts, Kaatje A1 - Eilers, Paul H. C. A1 - van Mechelen, Iven T1 - Simple and multiple P-splines regression with shape constraints Y1 - 2006 DO - 10.1348/000711005X84293 VL - 59 SP - 451 EP - -469 ER -