1. Rational component of the solutions of a first-order linear recurrence relation with a rational right-hand side;Abramov;USSR Comput. Math. Phys.,1975
2. Indefinite sums of rational functions;Abramov,1995
3. Applicability of Zeilberger's algorithm to hypergeometric terms;Abramov,2002
4. Applicability of Zeilberger's algorithm to rational functions;Abramov,2000
5. Optimal decomposition of indefinite hypergeometric sums;Abramov,2001