E. Haussuhl et E. Tillmanns, PHYSICAL-PROPERTIES AND PHASE-TRANSITIONS OF BIS(GUANIDINIUM)ZIRCONIUM BIS(NITRILOTRIACETATE)HYDRATE, [C(NH2)(3)](2)ZR[N(CH2COO)(3)](2)CENTER-DOT-H2O (VOL 212, PG 826, 1997), Zeitschrift fur Kristallographie, 213(2), 1998, pp. 134-134