Options on Periodically-Settled Stocks

I posted on my web site, www.ederman.com, a 14-year-old paper we wrote in Quantitative Strategies concerned with how to value options on stocks that settle in the old European style, where all stocks bought in the next (say) 30 days settle at some fixed date in the future, say 40 days from now. You can find it at

http://www.ederman.com/new/docs/gs-periodically-settled.pdf