Marika Rökk | Marika Kotopouli | Marika Zanforlin | Marika Fingerroos | Marika №5 |
As part of his research career, he originated the insider-outsider theory of employment and unemployment with Assar Lindbeck, the theory of high-low search with Steve Alpern, and the chain reaction theory of unemployment and the theory of frictional growth with Marika Karanassou and Hector Sala.