1 Subjects: “...back-propagation neural network...”

2 Subjects: “...back-of-queue model...”

3 Subjects: “...back-calculation...”

4 Subjects: “...back-calculation in geomechanics...”

5 Subjects: “...back calculation of modulus...”

6 Subjects: “...feed-back processes...”

7 Subjects: “...chronic low back pain...”

8 Subjects: “...fall-back strategy...”