Complexes of lanthanide picrates with 3-picoline-N-oxide (3-picNO) crystal structure of the europium compound - Nunes, C C F; Zinner, Klaus; Zinner, Lea Barbieri; Carvalho, C C; Vicentini, Geraldo; Zukerman-Schpector, Júlio (Rare Earths' 98, 1998)