Price American options using Bjerksund-Stensland 2002 option pricing model

computes American option prices with continuous dividend yield using the
Bjerksund-Stensland 2002 option pricing model.`Price`

= optstockbybjs(`RateSpec`

,`StockSpec`

,`Settle`

,`Maturity`

,`OptSpec`

,`Strike`

)

**Note**

`optstockbybjs`

computes prices of American options with
continuous dividend yield using the Bjerksund-Stensland option pricing model.

[1] Bjerksund, P. and G. Stensland. “Closed-Form Approximation of American
Options.” *Scandinavian Journal of Management.* Vol. 9, 1993,
Suppl., pp. S88–S99.

[2] Bjerksund, P. and G. Stensland. *“Closed Form Valuation of
American Options.”* Discussion paper 2002 (https://www.scribd.com/doc/215619796/Closed-form-Valuation-of-American-Options-by-Bjerksund-and-Stensland#scribd)