Productivity Growth, Environmental Regulations and the Composition of R & D
2007 ◽
Vol 61
(2-3)
◽
pp. 438-445
◽
2011 ◽
Vol 70
(12)
◽
pp. 2369-2379
◽
2018 ◽
pp. 73-94
1981 ◽
Vol 8
(4)
◽
pp. 381-390
◽