Ruchen Hou,  Guohui Wang &  Zhi Cheng. (2021). Two Dimensional Indecomposable Modules over Infinite Dimensional Hereditary Path Algebras.
            <i>Communications in Mathematical Research </i>. <i>31</i> (2).
            171-179.
         doi:10.13447/j.1674-5647.2015.02.08