Volume 8, Issue 2 Cornel Ioan Vălean A new proof for a classical quadratic harmonic series Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors Cornel Ioan Vălean Find more articles with the same keywords logarithmic integrals harmonic numbers quadratic series Euler sums Riemann Zeta function Find more articles with the same subject classes 40C10 40A05