Translate equations/formulas from paper to functions in [R] by dardisco

Hi, I’ve been working through the following papers: http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1852AJ……2..161P;data_type=PDF_HIGH http://articles.adsabs.harvard.edu/cgi-bin… (Budget: $30-$250 USD, Jobs: Academic Writing, LaTeX, Mathematics, Statistics)