Examples of precedence graphs.

DBMS Testing of Serializability - javatpoint

operating system - precedence graph with semaphores - Stack Overflow

Hybrid genetic algorithm for a type-II robust mixed-model assembly line balancing problem with interval task times

algorithm - How to get ancestors of a vertex of DAG in precedence order? - Stack Overflow

Algorithms

Precedence-Graph-Semaphore-Problem-Parbegin-Parend-With-labels

Example of precedence graph.

Examples of cycles and minimal cycles in the precedence graph for

Ch15

Full article: A new MIP approach for balancing and scheduling of mixed model assembly lines with alternative precedence relations

Precedence-Graph-Semaphore-Problem-1

File:PrecedenceGraphExample1.jpg - Wikipedia