1. Allday, C., Halperin, S.: Lie group actions on spaces of finite rank. Q. J. Math. Oxf. 28, 69–76 (1978)
2. Amann, M.: A note on the Hilali conjecture. Forum Mathematicum 29(2), 251–258 (2017)
3. De Bobadilla, J.F., Fresan, J., Munõz, V., Murillo, A.: The Hilali conjecture for hyperelliptic spaces. In: Pardalos, P., Rassias, ThM (eds.) Mathematics Without Boundaries, Surveys in Pure Mathematics, pp. 21–36. Springer, Berlin (2014)
4. Boutahir, K., Rami, Y.: On LS-category of a family of rational elliptic spaces II. Extracta Mathematicae 31(2), 235–250 (2016)
5. El Krafi, B.B., Hilali, M.R., Mamouni, M.I.: On Hilali’s conjectre related to Halperin’s. JHRS 3, 493–501 (2016)