Collect. Czech. Chem. Commun.
1966, 31, 3091-3103
https://doi.org/10.1135/cccc19663091
Calculations of models of the σ-electron structure of molecules. I. Ethylene; A bicentric and a polycentric semiempirical approach
R. Polák
Article purchase options
CCCC offers the online payment for pdf version of full texts of articles. The price is 15 EUR per article.
Payment using PayPal. PayPal allows you to accept credit cards or PayPal account balances. You will receive the required article by an e-mail attachment, typically within minutes from payment. Note: The PDF will be sent to the email address provided by PayPal. If you wish to supply a second email address, you can insert it under 'Add special instructions to merchant' at the PayPal payment page.
