Improved bounds on the number of ternary square-free words. Grimm, Uwe (2001) Journal of Integer Sequences [electronic only]
Improved inclusion-exclusion identities and inequalities based on a particular class of abstract tubes. Dohmen, Klaus (1999) Electronic Journal of Probability [electronic only]
Inequalities for chains of normalized symmetric sums. Bagdasar, Ovidiu (2008) JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Inequalities of Bonferroni-Galambos type with applications to the Tutte polynomial and the chromatic polynomial. Dohmen, Klaus, Tittmann, Peter (2004) JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]