1. “Valuation of Tandem Options.”;Blazenko;Advances in Futures and Options Research,1990
2. “Roll Up Puts, Roll Down Calls and Contingent Premium Options.”;Gastineau;The Journal of Derivatives,1994
3. “Contingent Premium Options.”;Kat;The Journal of Derivatives,1994
4. “Pay Now, Choose Later.”;Rubinstein;Risk,1991