1. Beattie, R., H.-P. Butzman, and H. Herrlich (1986), Filter convergence via sequential convergence, Comment. Math. Univ. Carolinae
27, 69–81.
2. Bednarek, A. R. and J. Mikusiúski (1969), Convergence and topology, Bull. Acad. Polon. Sci. Sér. Sci. Math. Astronom. Phys. 17, 437–442.
3. Birkhoff, G. (1936), On the combination of topologies, Fund. Math. 26, 156–166.
4. Dikranjan, D. N. (1994), Classes of abelian groups related to sequential convergence, Comm. Alg. 22, 6073–6090.
5. Dolcher, M. (1960), Topologie e strutture di convergenza, Ann. Scuola Norm. Super. Pisa Ser. III
14, 63–92.