Lowry, John P., Mc Mahon, Colm, Rocchitta, Gaia, Serra, Pier A., Kirwan, Sarah and O'Neill, Robert (2006) The efficiency of immobilised glutamate oxidase decreases with surface enzyme loading: an electrostatic effect, and reversal by a polycation significantly enhances biosensor sensitivity. Analyst, 131. pp. 68-72.