Assertion: relative strength index | /r/HasProperty | published in a 1978 book
Facets:
value: in commodities magazine
type: LOCATION
Source sentences:
text: The relative strength index was developed by J. Welles Wilder and published in a 1978 book, New Concepts in Technical Trading Systems, and in Commodities magazine (now Futures magazine) in the June 1978 issue.