2006–7, Massimo Vergassola et al., "‘<span class="searchmatch">Infotaxis</span>’ as a strategy for searching without gradients", in Nature, volume 445, pages 406–409 (2007 January 25)...
Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /home/enciclo/public_html/dictious.com/inc.main.result.php:14
Stack trace:
#0 /home/enciclo/public_html/dictious.com/search.php(75): include()
#1 {main}
thrown in /home/enciclo/public_html/dictious.com/inc.main.result.php on line 14