In addition to the weekly readings you may find the following sources useful.
Burger, Peter, Theory of the Avant-garde (University of Minnesota Press, 1984)
Hopkins, David, ‘Modernism in Retreat: Minimalist Aesthetics and Beyond’, After Modern Art: 1945 - 2000 (Oxford: Oxford University Press, 2000), pp. 131-159.
Joseph, Brandon, ‘The Tower and the Line: Toward a Genealogy of Minimalism’ in Grey Room, No. 27, 2007, pp. 58-81.
O'Pray, Michael, Avant-garde Film: Forms, Themes and Passions (London: Wallfower, 2003).
Rhodes, John David, Meshes of the Afternoon (BFI Film Classics), (London: BFI, 2011).