SEARCH Articles Figures Tables Approximations potentials Born approximation Born potential Born-Oppenheimer approximation Born-Oppenheimer approximation, potential Born-Oppenheimer energy Born-Oppenheimer energy surface Born-Oppenheimer potential surface Born-Oppenheimer potential surface energy Crude Born-Oppenheimer approximation potential energy surface Energy Born-Oppenheimer approximation Energy approximation Oppenheimer approximation Potential energy Born-Oppenheimer approximation The Born-Oppenheimer Approximation Potential Energy Surfaces