Lecture 4 (March 13)

Doepke(Macroeconomics) - subchapter 5.1 - 5.3, pp 39 - 43.
Doepke(Macroeconomics) - subchapter 13.2, pp 137 - 141.

Mas-Collel(Microeconomic theory) - subchapter 15.B, pp. 515 - 525 
Mas-Collel(Microeconomic theory) - subchapter 19.A - 19.C, pp. 687 - 693