Nearly a century later, during the crash of the Mississippi Company and the South Sea Company in about 1720, tulip mania appeared in satires of these manias. When Johann Beckmann first described tulip mania in the 1780s, he compared it to the failing lotteries of the time. In Goldgar's view, even many modern popular works about financial markets, such as Burton Malkiel's "A Random Walk Down Wall Street" (1973) and John Kenneth Galbraith's "A Short History of Financial Euphoria" (1990; written soon after the crash of 1987), used the tulip mania as a lesson in morality. Tulip mania again became a popular reference during the dot-com bubble of 1995–2001. and the subprime mortgage crisis. In 2013, Nout Wellink, former president of the Dutch Central Bank, described Bitcoin as "worse than the tulip mania", adding, "At least then you got a tulip, now you get nothing." Despite the mania's enduring popularity, Daniel Gross has said of economists offering efficient-market explanations for the mania, "If they're correct ... then business writers will have to delete Tulipmania from their handy-pack of bubble analogies."