2008

• Pattern Avoidance in "Flattened" Partitions.
  

2007

• A combinatorial interpretation for the identity .
  

• Sets, Lists and Noncrossing Partitions.
  

• Bijections from Dyck Paths to 321-Avoiding Permutations Revisited.
  

• A Determinant of Stirling Cycle Numbers Counts Unlabeled Acyclic Single-Source Automata.
  

2006

• A Bijection on Dyck Paths and Its Cycle Structure.
  

• On Generating Functions Involving the Square Root of a Polynomial .
  

• A Combinatorial Interpretation of j/n*{kn}\choose{n+j}.
  

2005

• (with Len Smiley) Noncrossing Partitions Under Rotation and Reflection.

• On Conjugates for Set Partitions and Integer Compositions.
  

• A Combinatorial Interpretation of the Eigensequence for Composition, Journal of Integer Sequences, 9, Article 06.1.4, 2006.
  

• Some Identities for the Catalan and Fine Numbers, Séminaire Lotharingien de Combinatoire, 53, Article B53e, 2005.
  

• Polygon Dissections and Marked Dyck Paths.
  

2004

• A Combinatorial Interpretation for a Super-Catalan Recurrence, Journal of Integer Sequences, 8, Article 05.1.8, 2005.
  

• Two Bijections for Dyck Path Parameters.
  

• Some Bijections for Restricted Motzkin Paths.
  

• A Combinatorial Proof of Sun's ''Curious'' Identity, INTEGERS, 4 (2004) A5.

2003

• A Uniformly Distributed Parameter on a Class of Lattice Paths, The Electronic Journal of Combinatorics, 11(1), Article R82, 2004 (8pp).
  

• A Combinatorial Derivation of the Number of Labeled Forests, Journal of Integer Sequences, 6, Article 03.4.7, 2003.
  

• Counting Stabilized-Interval-Free Permutations, Journal of Integer Sequences, 7, Article 04.1.8, 2004.
  

• (with Helmut Prodinger) An Involutory Matrix of Eigenvectors,, Fibonacci Quarterly, 41 (May 2003), 105-107.

2002

• Pattern Avoidance in Circular Permutations.
  

• Jordan and Smith forms of Pascal-related Matrices.
  

• A Recursive Bijective Approach to Counting Permutations Containing 3-letter Patterns.

2000

• Certificates of integrality for linear binomials, Fibonacci Quarterly, 38 (Aug 2000), 317-325.
  

• Permutations and Coin Tossing Sequences, Mathematics Magazine, 74 (Feb 2001), 55-57.

1999

• A Combinatorial Interpretation of a Catalan Numbers Identity, Mathematics Magazine, 72 (Oct 1999), 295-298.
  

• Two Uniformly Distributed Parameters Defining Catalan Numbers, American Mathematical Monthly 106 (Dec 1999), 940-941.

1997

• An exploratory approach to Kaplansky's lemma leads to a generalized resultant , American Mathematical Monthly 104 (1997), 709-712.
  

• When does m-n divide f(m)-f(n)? A look at column-finite matrices, Fibonacci Quarterly 35 (1997), 290-298.

1995

• On evaluating permanents and a matrix of cotangents, Linear and Multilinear Algebra 38 (1995), 193-205.
  

• Research Problem: Elementary divisors of an inversion counting matrix,, Linear and Multilinear Algebra 39 (1995), 401-403.
  

• Pair them up! A visual approach to the Chung-Feller Theorem, College Math. Journal 26 (1995), 196-198.

1991

• Another Determinant Condensation Formula, Linear and Multilinear Algebra 29 (1991), 93-98.

1985

• Another Way to Discover That , Mathematics Magazine, 58 (Nov 1985), 283-284.
  

1978

• The isomorphisms of unitary groups over noncommutative domains, Journal of Algebra 52 (1978), 475-503.

1976

• The Generation of Sp(F_2) by Transvections, Journal of Algebra 42 (1976), 378-390.