This is a work in process list of documents covering software productivity:

Reifer, Don, Industry Software Cost, Quality and Productivity Benchmarks

ISBSG Benchmark, For purchase through Galorath or ISBSG

Jones, Software Assessments, Benchmarks, and Best Practices

Understanding Softwaer Productivity, 1994 artcle summarizes many producitivty stuidies up to its time.  Worth a look even thought old.

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he following is a list of documents on software sizing.  It is a work in progress and will be updated regularly.:

Rand monograph of Software Cost Estimation and Sizing Methods

Galorath, Evans, Software Sizing, Estimation & Risk Management

Wikipedia, Software Sizing

Galorath, Effective Software Sizing, PM Forum.org

Jones, Software Sizing During Requirements Analysis, Modern Analyst.com

DCG, Software Sizing With Function Points

Boehm, Vaerdi, Et Al, An Empirical Study of eServices Product UML Sizing Metrics

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