(Academia.edu): This paper discusses the design and implementation of general-purpose sorters on FPGA hardware, which is a common context for finding .rar files containing hardware description language (HDL) code.
While there is no single academic paper titled "BaseSorter," the following research papers are foundational to the topics typically associated with that file name (hardware sorters and database management): BaseSorter.rar
Since you are looking for specific papers, you might find reference management tools useful for clustering your research: (Academia