TY - JOUR PY - 2017 J2 - Nat. Mater. SN - 1476-1122 T2 - Nature Materials VL - 16 IS - 1 TI - Framing upconversion materials (Retraction of Vol 14, Pg 864, 2015) UR - https://www.cheric.org/research/tech/periodicals/view.php?seq=1522667 AU - Simon YC AU - Weder C SP - 153 EP - 153 LA - English ER -