[1] Angoa J., Ortiz-Castillo Y., Tamariz-Mascarúa Á.: 
Compact-like properties in hyperspaces. Mat. Vesnik 65 (2013), 306–318. 
MR 3057283[2] Angoa J., Ortiz-Castillo Y., Tamariz-Mascarúa A.: 
Ultrafilters and properties related to compactness. Top. Proc. 43 (2014), 183–200. 
MR 3096293[3] Bernstein A.: 
A new kind of compactness for topological spaces. Fund. Math. 66 (1970), 185–193. 
MR 0251697 | 
Zbl 0198.55401[4] Boldjiev B., Malykhin V. I.: 
The sequentiality is equivalent to the Fréchet-Urysohn property. Comment. Math. Univ. Carolin. 31 (1990), 23–25. 
MR 1056166[6] García-Ferreira S., Ortiz-Castillo Y. F.: 
Strong pseudocompact properties. Comment. Math. Univ. Carolinae 55 (2014), 101–109. 
MR 3160828[8] García-Ferreira S., Sanchis M.: 
On $C$-compact subsets. Houston J. Math. 23, 1997, 65–86. 
MR 1688689 | 
Zbl 0881.54019[9] García-Ferreira S., Tomita A. H.: A pseudocompact groups which is not strongly pseudocompact. submitted.
[11] Kunen K.: 
Weak $P$-points in $\mathbb N^{*}$. Topology, Vol. II (Proc. Fourth Colloq., Budapest, 1978), pp. 741–749, Colloq. Math. Soc. János Bolyai, 23, North-Holland, Amsterdam-New York, 1980. 
MR 0588822[14] van Mill J.: 
An introduction to $\beta \omega$. Handbook of Set-theoretic Top., Chap. 11, Elsevier Science Publishers B.V., (1984) p. 503–567. 
MR 0776630 | 
Zbl 0555.54004