Is there anything to interpret Li Shangyin's book?

Su: A textual research on the love story (also known as Yu Xi Poem Mystery) 1927 edition Beixin Bookstore is hard to see now.

Dong Naibin: Li Shangyin's Spiritual World, Shanghai Ancient Books Publishing House, 1992.

Song Ningna: Li Shangyin and His Poems, Chinese Publishing House, 2008. This book has just come out and is easy to buy. )