Install libbtparse1 by entering the following commands in the terminal:
sudo apt update sudo apt install libbtparse1
Description:
C library to parse BibTeX files
btparse is the C component of btOOL, a pair of libraries for parsing and processing BibTeX files. It is built on top of a lexical analyzer and parser constructed using PCCTS. The library provides entry points to the parser, functions to traverse and query the abstract-syntax tree that it produces, and some functions for processing strings in "the BibTeX way".
Homepage: https://metacpan.org/release/Text-BibTeX
Version: 0.85-1
Section: universe/libs