PMC:4620161 / 25311-25392 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/4620161","sourcedb":"PMC","sourceid":"4620161","source_url":"https://www.ncbi.nlm.nih.gov/pmc/4620161","text":" ∑ j = 1 m α 1 j 2 ) 1 ∕ 2 = ( ∑ j = 1 m α 2 j 2 ) 1 ∕ 2 ","tracks":[]}