AGUILAR , MANUEL, NURIA MIRALLES and ANA M. SASTRE . "METAL COMPLEXES WITH PHOSPHONIC AND PHOSPHINIC ACIDS" Reviews in Inorganic Chemistry, 10.1-3 (2011): 93-120. Retrieved 22 May. 2013, from doi:10.1515/REVIC.1989.10.1-3.93

AGUILAR , M., MIRALLES , N. & SASTRE , A. (2011). METAL COMPLEXES WITH PHOSPHONIC AND PHOSPHINIC ACIDS. Reviews in Inorganic Chemistry, 10(1-3), pp. 3-233. Retrieved 22 May. 2013, from doi:10.1515/REVIC.1989.10.1-3.93

AGUILAR , MANUEL, NURIA MIRALLES and ANA M. SASTRE. 2011. METAL COMPLEXES WITH PHOSPHONIC AND PHOSPHINIC ACIDS. Reviews in Inorganic Chemistry. 10(1-3): 3-233. Retrieved 22 May. 2013, from doi:10.1515/REVIC.1989.10.1-3.93