Double sulfates of cobalt(II), nickel(II), copper(II) and zinc(II) with trimethylammonium cation – synthesis, identification and thermal decomposition,

S. Aleksovska, V. Jordanovska, Double sulfates of cobalt(II), nickel(II), copper(II) and zinc(II) with trimethylammonium cation – synthesis, identification and thermal decomposition, Thermochimica Acta, 228, 103–110 (1993).