<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Karp, Richard M. (1972):</hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">Reducibility Among Combinatorial Problems</hi>, in: <hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Miller, Raymond Edward / Thatcher, James W. (eds.):</hi> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">Complexity of Computer Computations</hi>. New York: Plenum 85–103. doi: 10.1007/978-3-540-68279-0_8.