Mahlberg B (2000). “Efficiency Progress and Productivity Change in Germany Insurance Industry.” Jahrbucher Fur Nationalokonomie Und Statistik 220(5): 565-591.
Mahlberg B (2000). “Efficiency Progress and Productivity Change in Germany Insurance Industry.” Jahrbucher Fur Nationalokonomie Und Statistik 220(5): 565-591.