He is member of the Slovenian Academy of Sciences and Arts.

After the war, he became a member of the Slovenian Academy of Sciences and Arts.

He has been a member of the Slovenian Academy of Engineering since 1999.

Since 1995, he has been member of the Slovenian Academy of Sciences and Arts.

In 2001, he became member of the Slovenian Academy of Sciences and Arts.

From 1972 he was a regular member of the Slovenian Academy of Sciences and Arts.

Since 2007 he is a regular member of the Slovenian Academy of Sciences and Arts.

He was made a member of the Slovenian Academy of Sciences and Arts in 1964.

He became a regular member of the Slovenian Academy of Sciences and Arts in 1991.

In 1995 he was made a member of the Slovenian Academy of Sciences and Arts.