@article{Frey2007,
        title = {Tax morale and conditional cooperation},
        author = {Bruno S. Frey and Benno Torgler},
        journal = {Journal of Comparative Economics},
        month = {Mar},
        number = 1,
        pages = {136--159},
        volume = 35,
        year = 2007,
        url = {http://www.sciencedirect.com/science/article/B6WHV-4N55THT-1/1/36691dcb9dea6ce0967fe5b904a3fa61},
        biburl = {http://www.bibsonomy.org/bibtex/2d436c4d42a53f00c79790770d5400c78/smicha},
	keywords = {Tax morale}
}