The Canvas class for Dartmouth's Spring 2020 course in Graph Theory, Math 38, seems to be mostly open. According to the syllabus, the course uses the 2nd edition of West's Introduction to Graph Theory.
This course will cover the fundamental concepts of graph theory: simple graphs, digraphs, Eulerian and Hamiltonian graphs, trees, ...
If you can ignore the specific UBC context, this might be the type of paper
the OP seeks:
"The Cognitive Science of Learning Enhancement: Optimizing Long-Term Retention." (2011).
Univ. British Columbia.
Here's an excerpt comparing "massed" vs. "spaced" learning:
"The advantage of spacing over ...