Tramontana, FabioFabioTramontanaWesterhoff, Frank H.Frank H.Westerhoff0000-0003-1666-4103Gardini, LauraLauraGardiniStübben, Felix2019-09-192013-12-172013https://fis.uni-bamberg.de/handle/uniba/2704engThe bull and bear market model of Huang and Day : some extensions and new resultsworkingpaperurn:nbn:de:bvb:473-opus4-61642