123 Software development for programmable logic controllers — A methodology and a system

1993 ◽  
Vol 1 (5) ◽  
pp. 896
1992 ◽  
Vol 25 (31) ◽  
pp. 233-238
Author(s):  
J.P. Estima De Oliveira ◽  
J.L. Azevedo ◽  
J.A. Ferreira ◽  
P.J. Ferreira

2012 ◽  
Vol 45 (29) ◽  
pp. 378-383 ◽  
Author(s):  
Sebastian Biallas ◽  
Stefan Kowalewski ◽  
Bastian Schlich

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