Jacek Blazewicz Edmund K. Burke Marta Kasprzak Alexandr Kovalev Mikhail Y. Kovalyov Simplified Partial Digest Problem: Enumerative and Dynamic Programming Algorithms. 668-680 2007 4 IEEE/ACM Trans. Comput. Biology Bioinform. 4 http://doi.acm.org/10.1145/1322075.1322091 db/journals/tcbb/tcbb4.html#BlazewiczBKKK07