https://www.aopa.org/news-and-media/all-news/2012/august/10/aug-10-2012-issue-of-aopa-epilot-flight-training-edition
Aug. 10, 2012, issue of 'AOPA' ePilot: Flight Training Edition' - AOPA
ePilot Training Tips: Weight: Worth the worry?
aug 10 2012flight trainingissueaopaedition