In {TAIL ~ another embodiment, oxides} or other oxygen containing compounds of said first element, said {HEAD ~ second element}, cerium, and terbium are dissolved in an acidic solution to form the first solution, such as hydrochloric acid, nitric acid, sulfuric acid, citric acid, or acetic acid 
In { TAIL ~ another embodiment , oxides } or other oxygen containing compounds of said first element , said { HEAD ~ second element } , cerium , and terbium are dissolved in an acidic solution to form the first solution , such as hydrochloric acid , nitric acid , sulfuric acid , citric acid , or acetic acid
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH