Hochreiter, Susanne. “‘We Were So Turned On’: Reflections on Queer(ing) Past and Memory.” Sexual Culture in Germany in the 1970s: A Golden Age for Queers?, edited by Janin Afken and Benedikt Wolf, Macmillan Palgrave, 2019, p. 48:
The ghosts that we hear represent what Jacques Derrida referred to as ‘hauntology’ in his Specters of Marx: The term refers to the situation of temporal, historical and ontological disjunction in which the apparent presence of being is replaced by an absent or deferred non-origin, represented by ‘the the figure of the ghost as that which is neither present, nor absent, neither dead nor alive’, as Andrew Gallix puts it (Gallix, 2011). . . . Many or even ‘all forms of representation are ghostly’ as Andrew Gallix puts it in his article: ‘Works of art are haunted, not only by the ideal forms of which they are imperfect instantiations, but also by what escpes representation’ (Gallix, 2011).
[PS I’m afraid the first quote is actually me quoting Colin Davis.]