15 international workshop on low energy positron and positronium physics 2009 : satellite workshop of the 26 ICPEAC 2009 : Toronto, Ontario, Canada : 29 July-1 August 2009. : 26 international conference on photonic, electronic and atomic collisions : Jul 2009, Toronto, Canada. (Journal of Physics: Conference Series ; 199)
15 international workshop on low energy positron and positronium physics 2009 : satellite workshop of the 26 ICPEAC 2009 : Toronto, Ontario, Canada : 29 July-1 August 2009. : 26 international conference on photonic, electronic and atomic collisions : Jul 2009, Toronto, Canada.