author: Tran Tinh Hien  Duncan Wyncoll  H Rogier van Doorn  Nguyen Van Vinh Chau 

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copyrighted in countries with longer than 60 years pma.

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copyrighted in countries with 71.5 years copyright term after publication.

copyrighted in countries with 25 years pma.

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copyrighted in countries with 74 years copyright term after publication.

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copyrighted in countries with 95 years pma.

copyrighted in Chinland.

copyrighted in Philippines.

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copyrighted in The Gambia.

copyrighted in countries which use the rule of the shorter term.

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copyrighted in countries with 70 years copyright term after publication.

copyrighted in countries with 50 years pma or shorter.

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copyrighted in countries with 60 years pma or shorter.

copyrighted in Burkina Faso.

copyrighted in Liberia.

copyrighted in Somalia.

copyrighted in countries with 90 years pma or shorter.

copyrighted in countries with 25 years pma or shorter.

copyrighted in Cameroon.

copyrighted in Bhutan.

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copyrighted in countries where faithful reproduction of a 2D work of art do not have additional copyrights.

copyrighted in Saudi Arabia.

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copyrighted in countries with 95 years pma or shorter.

copyrighted in Vietnam.

copyrighted in Ivory Coast.

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copyrighted in Sri Lanka.

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copyrighted in countries with 80 years pma or shorter.

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copyrighted in Libya.

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copyrighted in Lebanon.

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copyrighted in Kingdom of Denmark.

copyrighted in Mauritania.

copyrighted in Iran.

copyrighted in Tanzania.

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copyrighted in Democratic Republic of the Congo.

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copyrighted in Pakistan.

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copyrighted in countries with 50 years copyright term after publication.

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copyrighted in Taiwan.

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