APA (7th ed.) Citation

Ustimenko, A. Algebra of two-level cause-effect structures. Information processing letters..

Chicago Style (17th ed.) Citation

Ustimenko, A.P. "Algebra of Two-level Cause-effect Structures." Information Processing Letters. .

MLA (9th ed.) Citation

Ustimenko, A.P. "Algebra of Two-level Cause-effect Structures." Information Processing Letters., .

Warning: These citations may not always be 100% accurate.