Guide to Three-type Cores - Smogon University

What is a good 6th Pokemon for my team in HeartGold? I have Typhlosion, Lapras, Heracross, Ampharos, and Crobat. I need something easy to get early on, as well as a good

Core Crisis - Centering Your Team - Smogon University

Bulking UUp Your Knowledge: The Fighting-types of UU! - Smogon University

Smogon Tier List

Project - National Dex Monotype Creative Sets & Good Cores

What are the sturdiest cores that you've found? - PokéBase Pokémon Answers

Ability Guide for AAA: Offensive Edition - Smogon University

Guide to Three-type Cores - Smogon University

Resource - ADV OU Teambuilding/Strategy: Archetypes and Cores -- A Data-Driven Approach