I only glanced at number zero, but it got really confusing at the end saying that it will continue in #6 which doesn't make any sense because of two reasons: 1. numberically, it should continue to number one, and 2. number six isn't even listed in the main menu (there are no links to it). Anyway, I have listed the chapter name and number below, and they're missing number three. If you can make sense of it, let me know.

>>>
JLA/Avengers Fan Fiction

Justice League Assemble #0
The Deal
By Michael Sacal

Justice League Assemble #1
By Michael Sacal

JLA: O' Deadly Thanoseid #2
By Michael Sacal

Avengers: The Return Of Captain America #4
By Trevor Lee

Avengers:Victory At Last? #5
By Trevor Lee