Chapman S., García-Sánchez PA, Llena D., Malyshev A., Steinberg D.. On the delta set and the Betti elements of a BF-monoid. Arab. J. Math. (Springer). 2012;1:53-61.Edit

Chapman S., García-Sánchez PA, Llena D., Marshall J.. Elements in a numerical semigroup with factorizations of the same length. Canad. Math. Bull.. 2011;54:39-43.Edit

Chapman S., García-Sánchez PA, Llena D.. The catenary and tame degree of numerical monoids. Forum Math.. 2009;21:117-129.Edit

Chapman S., García-Sánchez PA, Llena D., Rosales J.. Presentations of finitely generated cancellative monoids and natural solutions of linear systems of equations. In: Fifth Conference on Discrete Mathematics and Computer Science (Spanish). Vol 23. Univ. Valladolid, Secr. Publ. Intercamb. Ed., Valladolid; 2006. 2. p. 217-224p. (Ciencias (Valladolid); vol 23).Edit

Chapman S., García-Sánchez PA, Llena D., Rosales J.. Presentations of finitely generated cancellative commutative monoids and nonnegative solutions of systems of linear equations. Discrete Appl. Math.. 2006;154:1947-1959.Edit

Chapman S., García-Sánchez PA, Llena D., Ponomarenko V., Rosales J.. The catenary and tame degree in finitely generated commutative cancellative monoids. Manuscripta Math.. 2006;120:253-264.Edit

Chapman S., García-García JI, García-Sánchez PA, Rosales J.. On the number of factorizations of an element in an atomic monoid. Adv. in Appl. Math.. 2002;29:438-453.Edit

Chapman S., García-García JI, García-Sánchez PA, Rosales J.. Computing the elasticity of a Krull monoid. Linear Algebra Appl.. 2001;336:191-200.Edit

Chapman S., García-Sánchez PA, Tripp Z., Viola C. Measuring primality in numerical semigroups with embedding dimension three. J. Algebra Appl.. 2016;15:1650007, 16.Edit