A Mooney, JG Keating JG and DM Heffernan, "A detailed study of the generation of optically detectable watermarks using the logistic map", CHAOS SOLITONS & FRACTALS 30: 1088-1097,  2006.

    D Kilbane, A Curnmings, G O'Sullivan G, and DM Heffernan, "Characterization of the structure and eigenvalue spectra of the compound states of SmIX", PHYSICA SCRIPTA 73: 198-216, 2006.

    D Kilbane, A Curnmings, G O'Sullivan G, and DM Heffernan, "Quantum statistics of a kicked particle in an infinite potential well", CHAOS SOLITONS & FRACTALS 30: 412-423, 2006.

    D Kilbane, A Curnmings, G O'Sullivan G, and DM Heffernan, "The classical-quantum correspondence of a kicked particle in an infinite potential well", CHAOS SOLITONS & FRACTALS 30: 424-440, 2006

    A Rogers, R Shorten and DM Heffernan, "Synthesizing chaotic maps with prescribed invariant densities", PHYSICS LETTERS A 330: 435-441,  2004.

    GA Kells, J Twamley and DM Heffernan, "Dynamical properties of the delta-kicked harmonic oscillator", PHYSICAL REVIEW E 70: Art. No. 015203(R),  2004.

    D Stynes  and DM Heffernan, "Universality and scaling in chaotic attractor-to-chaotic attractor transitions", CHAOS SOLITONS & FRACTALS 13: 1195-1204, 2002.

    A Cummings, G O'Sullivan and DM Heffernan, "Signatures of quantum chaos in rare-earth elements: I. Characterization of the Hamiltonian matrices and coupling matrices of Ce I and Pr I using the statistical predictions of Random Matrix Theory", JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 34: 3407-3446,  2001.

    A Rogers, JG Keating, R. Shorten and DM Heffernan, "Chaotic maps and pattern recognition - the XOR problem", CHAOS SOLITONS & FRACTALS 14: 57-70, 2002.

    WG Hanan, J Gough and DM Heffernan, "Left-sided multifractality in a binary random multiplicative cascade", PHYSICAL REVIEW E 63: Art. No. 011109,  2001.

    A Cummings, G O'Sullivan and DM Heffernan, "Signatures of quantum chaos in rare-earth elements: II. Characterization of the energy eigenvalues and dipole moments of Ce I and Pr I" ,JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PPHYSICS  34: 3447-3476,  2001.

    D Stynes and DM Heffernan, "Universality and scaling in chaotic attractor to chaotic attractor transitions in an optical ring cavity resonator", JOURNAL OF MODERN OPTICS 48: 1043-105,  2001

    A Cummings, G O'Sullivan, WG Hanan and DM Heffernan, "Multifractal analysis of selected rare-earth elements", JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 34: 2547-2573, 2001.

    WG Hanan  and DM Heffernan, "Geometrical multifractality of the perimeter of DLA clusters", CHAOS SOLITONS & FRACTALS 12: 193-195,  2001.