P. Katis, N. Sabadini, R.F.C. Walters, Bicategories of processes. Journal
of Pure and Appled Algebra, 115:141-178, 1997.
Katis P, Sabadini N, Walters RFC, ReRepresenting P/T nets in Span(Graph)
Proceedings AMAST '97, SLNCS 1349, 307-321, 1997.
P. Katis, N. Sabadini, R.F.C. Walters, SpanSpan(Graph): an algebra of
transition systemsceedings AMAST '97, SLNCS 1349, 322-336, 1997
R. Rosebrugh, N. Sabadini, R.F.C. Walters, MinimaMinimal realization in
bicategories of automata 8:93-116, 1998
P. Katis, N. Sabadini, R.F.C. Walters, On the algebraOn the algebra of feedback and
systems with boundaryeminar on Sheaves and Logic, TRIESTE
28-29 November 1998
P.Katis, N. Sabadini, R.F.C. Walters, A formalis A formalisation of the IWIM Model.. COORDINATION 2000,(Eds.) Porto A., Roman G.-C., LNCS
1906:267-283, Springer Verlag, 2000.
P. Katis, N. Sabadini, R.F.C. Walters, On the algebrOn the algebra of systems with
feedback & boundary,l Circolo Matematico di Palermo Serie
II, Suppl. 63 (2000), 123-156
P. Katis, N. Sabadini, R.F.C.Walters, Concurrency & ReConcurrency & Recursion, FICS, Florence September 2001.
F. Gadducci, U. Montanari, P. Katis, N. Sabadini, R.F.C. Walters,
Comparing Cospan-sComparing Cospan-spans & Tiles via a Hoare-style process calculus 62, TOSCA Udine November 2001.
P. Katis, N. Sabadini, R.F.C. Walters, Feedback, trace andFeedback, trace and fixed-point semanticsics Appl. 36:181-194 (2002)
N. Sabadini, R.F.C.Walters, Categorical algebrasCategorical algebras of automatasession on Semigroups Automata and Formal Languages, AMS-UMI
meeting Pisa, 12-16 June 2002, Notices of the American Mathematical Society
N. Sabadini, R.F.C. Walters, Hierarchical automata Hierarchical automata and P systems, 1-15, 2003.
P. Katis, N. Sabadini, R.F.C. Walters, Compositional minimizatCompositional minimization in Span(Graph): Some exampleseoretical Computer
Science 104C, pp. 181-197, 2004.
A. Cherubini, N. Sabadini, R.F.C. Walters, Timing in the Cospan-SpanTiming in the Cospan-Span Modeoretical Computer Science 104C, pp. 81-97,
R. Rosebrugh, N. Sabadini, R.F.C. Walters, Generic commutative separaGeneric commutative separable algebras and cospans of graphsf Categories, 15,
264-177, 2005.
M. Menni, N. Sabadini, R.F.C. Walters, A universal property of the A universal property of the monoidal 2-category of cospans of ordinals and surjectionsf Categories, Vol. 18, pp 631-653, 2007.
R. Rosebrugh, N. Sabadini, R.F.C. Walters, Calculating colimits
composCalculating colimits
compositionally,065, pp. 581?592, 2008.(also
arXiv:0712.2525)
P. Katis, N. Sabadini, R.F.C.
L. de Francesco Albasini, N. Sabadini, R.F.C. Walters, The parallel
composition of procThe parallel
composition of processestems using
Transition systems, 111--121, Forum, Udine, 2008 (also arXiv:0904.3961).
L. de Francesco Albasini, N. Sabadini, R.F.C. Walters, Systems with
discrete geometry, ART 2008, Analysing Reduction systems using Transition
systems, 122--131, Forum, Udine, 2008.
L. de Francesco Albasini, N. Sabadini, R.F.C. Walters, Cospan
Span(Graphs): a compositional moCospan
Span(Graphs): a compositional model for reconfigurable automata netsheory, Cremona, Italy, 9-11 October
2008.
L. de Francesco Albasini, N. Sabadini, R.F.C. Walters, ThThe compositional
construction of Markov processespplied Categorical Structures, (also
arXiv:0901.2434), July 2010.
L. de Francesco Albasini, N. Sabadini, R.F.C. Walters, An alAn algebra of
automata which includes both classical and quantum entities,pear in
proceedings QPL09, ENTCS, (also arXiv:0901.4754).
L. de Francesco Albasini, N. Sabadini, R.F.C. Walters, The composThe compositional <