C H A P T E R 14. G E N E R A L E Q U IL IB R IU M ............................................................................................................... .. 181 Sum m ary...................................................................................................................................................................................... .. 18? Q uestions for R ev ie w .................................................................................................................................................................. 18? Basic Literature.......................................................................................................................................................................... .. 182 C H A P T E R 15. E X O G E N O U S E F F E C T S .................................................................................................... ......... ...... .. 183 15.1. Transactional co sts............................................................................................................................................................ 183 15.2. C oase T h eo re m ................................................................................................................................................................. 183 15.3. Positive and negative in flu en ce on external effe c t................................................................................................ .. 185 Sum m ary...................................................................................................................................................................................... .. 188 Q uestions for R ev ie w .................................................................................................................................................................. 189 Basic Literature.......................................................................................................................................................................... .. 189