H. Fu, and E. Nguifo. Concept Lattices, volume 2961 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-540-24651-0_33.(2004)
H. Fu, and E. Nguifo. Concept Lattices, volume 2961 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-540-24651-0_33.(2004)