@other{https://resolver.caltech.edu/CaltechAUTHORS:JPLpub86-31-volumeII, title = "Electricity from photovoltaic solar cells: Flat-Plate Solar Array Project final Report. Volume II: Silicon material", url = "https://resolver.caltech.edu/CaltechAUTHORS:JPLpub86-31-volumeII", id = "record" }