Pontormo or Bronzino?

[zarajara]

Dear forum users !
I am preparing material for a lecture on Mannerism find work, not previously seen (Thank the Internet! >) . By themselves, they are quite unusual, they have an amazing time for composition ( now - then used to everything , but everything is the same 16th century) . Everything is wonderful , but the authorship of confusion .
At some sites , " the Holy Matthew " is attributed to Jacopo Pontormo
http://www.artunframed.com/pontormo.htm

and on the other - Angelo Bronzino
http://arte-historia.com/retratos-de...ta-el-bronzino

Maybe someone knows yet whose work ?
I managed to find two more of the same series - St. John and St . Mark, but I can not find St . Luke, if anyone has a show , pliz >
P.S. And St . John found the site by Pontormo , and St. . Mark on the site but Bronzino confidence to both sites there is now no .