7/2016 - Article: Klingendes Stahl oder das gestimmte Ölfass (german)

https://tantotiempo.de/de/zeitreise/1930-1939/klingendes-stahl-oder-das-gestimmte-oelfass/

About Steeltuner Eckhard Schulz

by Yvonne Steiner

” He wanted an international standard in the layout for steelpans and therefore developed years ago the so-called Integral System, which allows an overall recognition of the tone position on a pan.” (translated with DeepL)