Which books are authentic to refer and study Islamic eschatology? for the reference of those Books related to the Author and authenticity.
One of these books might be:
al-Tadhkirah fī Aḥwāl al-Mawtá wa-Umūr al-Ākhirah التذكرة في أحوال الموتى وأمور الآخرة (Reminder of the Conditions of the Dead and the Matters of the Hereafter): a book dealing with the topics of death, the punishments of the grave, the endtimes and the day of resurrection of Imam al-Qurtobi
al-Budur as-Safirah fi ahwal al-Akhirah البدور السافرة في أحوال الآخرة of Imam as-Suyuti (not one of his better works as it seems).
and al-Bohor az-Zakhirah fi 'ulumi al-Akhirah "البحور الزاخرة في علوم الآخرة of as-Safaryani محمد بن أحمد السفاريني
If you could make clear what topics these books should address I could try to give you a more detailed list see also this fatwa (in Arabic) on a book reference on the topic.