Malmquist-Luenberger Productivity Index programmed in R?

Dear All,
I am a PhD Candidate in Economics wondering whether you might know this: is it possible to compute the Malmquist-Luenberger productivity index using R? Has this index been programmed by someone in R as yet? I found that the standard Malmquist productivity index has been programmed in R, which would be one part of my analysis.

I very much appreciate your help.

Best regards,
Jan Weiss