The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The author ponders over his long-lasting relations in economic research activities with Zdzislaw Sadowski on the occasion of the 80th birthday anniversary of the latter. In view of the quite different areas of their research he concentrates mainly on comparison of concrete tasks they had to fulfill and the condiions of their realisation. It is only recently that after certain changes in their research...