Rohatgi, Vijay K.; Székely, Gábor J. (1989). "Sharp inequalities between skewness and kurtosis". Statistics & Probability Letters. 8 (4): 297–299. doi:10.1016/0167-7152(89)90035-7.
Klaassen, Chris A.J.; Mokveld, Philip J.; Van Es, Bert (2000). "Squared skewness minus kurtosis bounded by 186/125 for unimodal distributions". Statistics & Probability Letters. 50 (2): 131–135. doi:10.1016/S0167-7152(00)00090-0.
See e.g. John Guckenheimer; Stewart Johnson (July 1990). "Distortion of S-Unimodal Maps". Annals of Mathematics. Second Series. 132 (1): 71–130. doi:10.2307/1971501. JSTOR1971501.
Godfried T. Toussaint (June 1984). "Complexity, convexity, and unimodality". International Journal of Computer and Information Sciences. 13 (3): 197–217. doi:10.1007/bf00979872. S2CID11577312.
See e.g. John Guckenheimer; Stewart Johnson (July 1990). "Distortion of S-Unimodal Maps". Annals of Mathematics. Second Series. 132 (1): 71–130. doi:10.2307/1971501. JSTOR1971501.
Godfried T. Toussaint (June 1984). "Complexity, convexity, and unimodality". International Journal of Computer and Information Sciences. 13 (3): 197–217. doi:10.1007/bf00979872. S2CID11577312.