For the by O.V. Afanaseva, I.V. Mikheeva, and K.M. Baranova (published by Drofa/Prosveshchenie), there is no specific term "deep paper" commonly used as a topic title or exercise name. It is likely a slight mistranslation or misremembering of a phrase from Unit 1, which focuses on Mass Media: Radio, Television, and the Internet .
If "deep paper" is a specific phrase from an exercise (e.g., "The news was buried deep in the paper"), I recommend checking the or Unit 1, Section 8 in the Rainbow English 9 textbook materials on Infourok for the exact context and translation. gdz po angliiskomu iazyku 9 klass afanaseva mikheeva drofa
: Includes a complete manual for the workbook and student book for the 9th-grade Rainbow English series. Possible Clarifications for "Deep Paper" Given the textbook's content, you might be looking for: For the by O