* 'Arbori indexati binar':http://algopedia.ro/wiki/index.php/Clasele_11-12_lec%C8%9Bia_7_-_29_oct_2014
** 'Arhiva Educationala':problema/aib
** 'Extensie pentru Range Query si Range Update':http://petr-mitrichev.blogspot.com/2013/05/fenwick-tree-range-updates.html

** Probleme: 'pq':problema/pq, 'distincte':problema/distincte, 'calafat':problema/calafat, 'hapsan':problema/hapsan

** Probleme: 'pq':problema/pq, 'distincte':problema/distincte, 'calafat':problema/calafat, 'hapsan':problema/hapsan, 'undo':problema/undo

* 'Arbori de intervale':http://codeforces.com/blog/entry/15890
** 'Arhiva Educationala':problema/arbint
** 'Articol pe infoarena':arbori-de-intervale