Do you have any sources regarding Children's writing during the Holocaust?
There is a book "Children Writing the Holocaust." The library does not own it but many libraries which particicpate in E-Z Borrow do. You can request it through E-Z Borrow. You can also search Proquest Research Library database with children AND writing AND holocaust. That is how I found the book through the reviews indexed in this database. Research Library will be your best bet for finding articles.