Do Shi'ites believe in other holy books/revelations after Qur'an?

I was told that there are three other holy books apart from Qur'an that Shi'ites believe in. Al-Jafr - This book claims to have the original injil, Torah and Zabur and more secret knowledge. Al-Jamia - This has information about all halal and haram and knowledge of sciences that you people need to know. Book of Fatimah - Also known as Mush-haf Fatimah, it came across as most controversial to me because it claims to have things that was revealed to Fatimah (radiallahu anha) by Angel Gabriel from Allah and Ali (radiallahu anhu) acted as her scribe. How can there be a divine revelation to someone after Prophet Muhammad (salallahu alayhi wassalam)? Please help me understand what these books are about and do they really exist?