examines the problem of negative pollution by, ¯rst, critically discussing two approaches adopted in existing EKC models and … the theo- retical problem of negative pollution, but also does well regarding the empirical plausibility of the abatement …

problem of negative pollution by, first, critically discussing two approaches adopted in existing EKC models and, second, by … theoretical problem of negative pollution, but also does well regarding the empirical plausibility of the abatement technology. …

problem of negative pollution by, first, critically discussing two approaches adopted in existing EKC models and, second, by … theoretical problem of negative pollution, but also does well regarding the empirical plausibility of the abatement technology. …