Ansori, M., Wamiliana, & Puri, F. C. (2021). Determining The Number of Connected Vertex Labeled Graphs of Order Seven without Loops by Observing The Patterns of Formula for Lower Order Graphs with Similar Property. Science and Technology Indonesia, 6(4), 328–336. https://doi.org/10.26554/sti.2021.6.4.328-336