1. Technical Report;R. K. Ahuja,1988
2. A.V. Aho, J.E. Hopcroft, J.D. Ullman: “Data Structures and Algorithms”, Addison-Wesley Publishing Company, 1983
3. A. Bachem: Personal Communication, 1988
4. A. Müller-von Brochowski, T. Kretschmer, J. Messerschmitt, M. Ries, J. Schütz: “The Programming Language Comskee”, Linguistische Arbeiten, Heft 10, SFB 100, Univ. des Saarlandes, Saarbrücken, 1984
5. M.L. Fredman, and R.E. Tarjan: “Fibonacci Heaps and Their Uses in Improved Network Optimization Algorithms”, 25th Annual IEEE Symp. on Found. of Comp. Sci., 338–346, 1984