Observation of Positronium Specular Reflection from LiF, Weber MH, Tang S, Berko S, Brown BL, Canter KF, Lynn KG, Mills AP, Roellig LO, Viescas AJ, Physical Review Letters, Volume 61, Number 22, pp. 2542-2545, 11/28/1988
Observation of intense two-bream positron diffraction and the precise determination of the positron band gap in rare-gas crystals, Gullikson EM, Mills AP, McRae EG, Physical Review B, Volume 37, Number 1, pp. 588-591, 1/1/1988
Laser Excitation of the Muonium 1S-2S Transition, Chu S, Mills AP, Yodh AG, Nagamine K, Miyake Y, Kuga T, Physical Review Letters, Volume 60, Number 2, pp. 101-104, 1/11/1988