Chapter from Edward Gibbon's "The Decline and Fall of the Roman Empire," tells of Pertinax's election, attempted reforms, and murder.
Provides an overview of the life and reign of the Emperor Pertinax who ruled for just 187 days.
Entry for Pertinax at the Catholic Encyclopedia.
Wikipedia article on the life of Pertinax.
Offers a biography of the life of the Roman Emperor Pertinax.