1 Subjects: “...production planning...”

2 Subjects: “...extensive production system...”

3 Subjects: “...cyber-physical production systems...”

4 Subjects: “...tourism product development...”

5 Subjects: “...new product development...”

6 Subjects: “...agriculture products...”

7 Subjects: “...co-production...”

8 Subjects: “...biogas production...”

9 Subjects: “...product innovation...”

10 Subjects: “...productive-receptive skills...”