- C.A.D. FOR THE BEST VISION OF THE PLAN IN THE TRANSFORMATION FROM IDEA TO REALITY
Congress "Il dettaglio non è un dettaglio", Palermo, 1985
- SPHERICAL PERSPECTIVE
CO.GRA.S. , Palermo, 1986.
- NEW DETAILS TO PERFECT THE SCIENTIFIC BASES OF THE REPRESENTATION
Congress "I fondamenti scientifici della rappresentazione", Roma, 1986.
- EYE AND PERSPECTIVE
Congress "Architettura del bello, Architettura del sublime: le risposte del disegno", Palermo, 1987.
- AXONOMETRIC REPRESENTATION OF QUADRIC SURFACES
CO.GRA.S. , Palermo, 1986.
- SINHOMOLOGY
CO.GRA.S. , Palermo, 1987.
- PERSPECTIVE REPRESENTATION OF QUADRIC SURFACES
CO.GRA.S. , Palermo, 1987.
- SURVEY AT A DISTANCE OF A BODY BY MEANS OF TWO PHOTOGRAMS
CO.GRA.S. , Palermo, 1988.
- PROJECTIVITY BETWEEN OROGRAPHIC IMAGES
CO.GRA.S. , Palermo, 1988.
- NEW CONSTRUCTIONS OF CONICS
CO.GRA.S. , Palermo, 1988.
- GRAPHIC RESTITUTION BY MEANS OF TWO FREELY ORIENTED PHOTOGRAMS
CO.GRA.S. , Palermo, 1988.
- PLANNING BY MEANS OF OROGRAPHIC PERSPECTIVE (with R. Filosto and M. Inzerillo)
Collana di Scienza della Rappresentazione del Dipartimento di Rappresentazione, Palermo, 1988.
- TELECENTRIC PERSPECTIVE
CO.GRA.S. , Palermo, 1988.
- C.A.D. ANALYSIS ABOUT THE PERSPECTIVE PROJECTION OF GROUPS OF QUADRIC SURFACES AND POLIEDRON PRISMS – FIRST PART ELLIPSOIDS (with M. Inzerillo and C. Quattrocchi).
Collana di Scienza della Rappresentazione del Dipartimento di Rappresentazione, Palermo, 1989
- TWO METHODS GRAPHIC RESTITUTION BY MEANS OF TWO FREELY ORIENTED PHOTOGRAMS.
“XII International Symposium of architectural photogrammetry”, Roma, 1989.
- ORTHOGONAL PHOTOGRAPHIC PROJECTION.
“XIII Symposium of Architectural photogrammetry”, Cracovia, 23-26 ottobre 1990.
- THE DIGITAL ARCHITECTONIC BATIGRAPHY (with R. Filosto)
Congress “ V seminario di primavera”, Palermo, 1991.
- SINGLE PARALLEL PROJECTION
Congress “Geometria e percezione nei metodi di rappresentazione grafica”, Bari, 1992.
- CROMOSINTAGMA
Scientific review “XY, dimensioni del disegno”, Roma, anno ottavo, nn. 21 e 22, 1994.
- FROM THE PAST TO THE FUTURE: A NEW DEMONSTRATION OF THE FUNDAMENTAL THEOREM OF AXONOMETRY
Scientific review “Disegnare, idee immagini”,Roma, 1994
- THE THEOREM OF REPRESENTATION AND THE UNIFICATION OF ITS METHODS.
Scientific review “Disegnare, idee immagini”, Roma, anno V, n. 8 , 1995.
- THE AUTOMATIC SURVEY LFE.
Congress XV Convegno Internazionale “Il disegno luogo della memoria”, Firenze, 1995.
- THE SPACE ABSOLUTE NO-MEASURABILITY PRINCIPLE AND THE SCIENCE OF SPACE: THE STEREICS.
International Institute for Advanced Studies of Space Representation Sciences, Palermo, 1997
- THE DIMENSIONS OF THE SPACE
International Institute for Advanced Studies of Space Representation Sciences, Palermo, 2008.
- GENERAL THEOREM OF POLIEDRON PRISMS: A NEW GENERAL HOMOEOMORPHIC DEMONSTRATION.
International Institute for Advanced Studies of Space Representation Sciences, Palermo, 2009.
- IDENTIFICATION IN THE SPACE
International Institute for Advanced Studies of Space Representation Sciences, Palermo, 2010.
- PROJECTIVE GEOMETRICAL DEMONSTRATION OF KEPLER CONJECTURE ON GREATEST DENSITY OF A GROUP OF SPHERES
Institute for Advanced Studies of Space Representation Sciences, Palermo, 2011.