1. The pricing of options and corporate liabilities;Fischer Black;Journal of Political Economy,1973
2. The valuation of options for alternative stochastic processes;C John;Journal of financial economics,1976
3. Equivalent black volatilities;S Patrick;In: Applied Mathematical Finance,1999
4. The Crash of '87: Was It Expected? The Evidence from Options Markets;S David;The journal of finance,1991
5. The variance gamma process and option pricing;B Dilip;Review of Finance,1998