| Author | Titles | | 1.
| International biennale de la Gravure, 04, Cracóvia, 1972 | 1 | | 2.
| International Biennial Exhibition of Prints, 07, Tokyo, 1970 | 1 | | 3.
| International Biennial of Graphic, 25, Lubiliana (Eslovénia) | 1 | | 4.
| International biennial of graphic art, 10, Liubliana (Jugoslávia), 1973 | 0 | | 5.
| Author is: Bienal internacional de gravura moderna, 10, Liubliana, 1973 | 1 | | 6.
| International Biennial of Graphic Art, 23a, Lubiliana (Eslovénia) 1999 | 1 | | 7.
| International Cairo Biennale, 06, 1996 | 1 | | 8.
| International Catholic Migration Congress, The Hague, 1954 | 1 | | 9.
| International Catholic Migration Foundation | 1 | | 10.
| International Center for Contemporary Art (Tacoma, Estados Unidos) | 0 | | 11.
| Author is: Museum of Glass. International Center for Contemporary Art (Tacoma, Estados Unidos) | 1 | | 12.
| International Center for Mathematics (Coimbra, Portugal) | 1 |
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