Pure Appl. Chem., 1991, Vol. 63, No. 2, pp. 195-204
http://dx.doi.org/10.1351/pac199163020195
The lego way: curve crossing diagrams as general models in physical organic chemistry
First page:
Pure Appl. Chem., 1991, Vol. 63, No. 2, pp. 195-204
http://dx.doi.org/10.1351/pac199163020195