Hi, I'm working on the calibration of implied volatility, could anybody kindly pass me relating papers, please?Do you know the method of extrapolation by delta?Many many thanks!!!!!

<t>Hi, sorry for this stupid question, please this is serious to me!There's a simple way to note an excel range in VBA, that is to put [] around the range name, for example:[RangeN] instead of range("RangeN").I have always been using this notation, but recently I've changed machine and it doesn't wo...