1. R. Ayala, L.M. Fernández, D. Fernández-Ternero, J.A. Vilches, Discrete Morse theory on graphs. Topology and its Applications 156 (2009), 3091–3100.
2. U. Bauer, Persistence in discrete Morse theory. Available at https://ediss.uni-goettingen.dehandlebauer_u.
3. M. K. Chari, M. Joswig, Complexes of discrete Morse functions, Discrete Mathematics 302 (2005) 39-51.
4. D. Fernández-Ternero, E. Macías-Virgós, D. Mosquera-Lois, N. A. Scoville, J. A. Vilches Fundamental theorems of Morse theory on posets. AIMS Mathematics 2022, Volume 7, Issue 8.
5. R. Forman: A User's Guide to Discrete Morse Theory. Seminaire Lotharingien de Combinatoire 48 (2002), Article B48c.