TIEN, Nguyen Anh; 						VUONG, Bui Xuan; 						TUAN LOI, Nguyen.
 Synthesis of HoFeO3 Nanomaterials by Citric Acid  Sol-gel Method.
<strong>VNU Journal of Science: Natural Sciences and Technology</strong>, [S.l.], v. 36, n. 4, dec. 2020.
ISSN 2588-1140.
Available at: &lt;<a href="https://js.vnu.edu.vn/NST/article/view/5102" target="_new">https://js.vnu.edu.vn/NST/article/view/5102</a>&gt;. Date accessed: 03 may 2024.
doi: <a href="https://doi.org/10.25073/2588-1140/vnunst.5102">https://doi.org/10.25073/2588-1140/vnunst.5102</a>.