By Penrose, Jane
By Colyer, Penrose
By Colyer, Penrose, Penrose Colyer
By Penrose, Roger, Longair, Malcolm
By Feynman, Richard P., Penrose, Roger
By Hawking, Stephen, Penrose, Roger
By Penrose, Roland
By Penrose, Roger
By Penrose, Ann
By Freeman, Simon, Penrose, Barrie
By Nash, Rod, Colyer, Penrose
By Penrose, Stephen, Kybird, Paul, Kyusho-Ford, Joseph
By Penrose, Gordon, Nostbakken, Janis, Baillie, MARILYN
By Zee, A., Penrose, Roger
By Barrie Penrose, Simon Freeman, Penrose, B. et al.
By Penrose, Harald
By Penrose, Jane, Stuart, Jon
By Honnywill, Jill, Penrose, David
By Worsnop, Richard, Penrose, David
By Penrose, Roger, Roger Penrose