Retraction: Pan, T., Yu, Q., and Lloyd, S. (2013). “Quantum-chemistry–based study of beech-wood lignin as an antioxidant of petroleum asphalt.” J. Mater. Civ. Eng. , 25(10), 1477–1488; DOI:10.1061/(ASCE)MT.1943-5533.0000684 - Retraction Notice | RetractBase