Cheonshik Kim Dongkyoo Shin Dongil Shin Xinpeng Zhang 0001 Improved Steganographic Embedding Exploiting Modification Direction in Multimedia Communications. 130-138 2011 STA https://doi.org/10.1007/978-3-642-22339-6_16 https://www.wikidata.org/entity/Q57850076 conf/sta/2011 db/conf/sta/sta2011.html#KimSSZ11