Before revision: Rigorous Formulation Determination of VB Structures Rumer's Method Rumer Structures for Valence Bond calculations in Butadiene|alt= A method of creating a linearly independent, complete set of valence bond structures for a molecule was proposed by Yuri Rumer.
After revision: Rigorous Formulation Determination of VB Structures Rumer's Method The 20 possible VB structures for butadiene and their Rumer circles A method of creating a linearly independent, complete set of valence bond structures for a molecule was proposed by Yuri Rumer.