Abram, Paulus Hengky, Burns, Robert C., Li, Lichun. Elsevier; 2020. Three- and two-site heteropolyoxotungstate anions as catalysts for the epoxidation of allylic alcohols by H₂O₂ under biphasic conditions: Reactivity and kinetic studies of the [Ni₃(OH₂)₃(B-PW₉O₃₄){WO₅(H₂O)}]⁷⁻, [Co₃(OH₂)6(A-PW₉O₃₄)2]¹²⁻, and [M₄(OH₂)₂(B-PW₉O₃₄)₂]¹⁰⁻ anions, where M = Mn(II), Co(II), Ni(II), Cu(II) and Zn(II).

Abram, Paulus Hengky. Heteropolyoxotungstates as catalysts for the epoxidation of allylic alcohols. 2015.

Burns, Robert C., Abram, Paulus Hengky. Springer; 2018. Sandwich anions [WZn{M(OH2)}2(B-ZnW9O34)2]12− (where M = Mn2+, Co2+, Ni2+, Cu2+ and Zn2+) as oxygen transfer catalysts for H2O2 in the epoxidation of allylic alcohols under biphasic conditions.