Before revision:  We begin with a relatively simple continuous model of news impact on share-prices . In spite of its simplicity, it describes well the power growthof share-prices ,  periodicity, logarithmic periodicity, and the market phenomena like using price targets and profit-taking;
After revision:  We begin with a relatively simple continuous model of news impact on share-prices , periodicity, logarithmic periodicity, and the market phenomena like using price targets and profit-taking;