Müller, B., Erlacher, S., Hausmann, A., Rajaei, H., Sihvonen, P. & P. Skou (2019): The Geometrid Moths of Europe. Volume 6. Subfamily Ennominae II (Boarmiini, Gnophini, additions to previous volumes). — Part 1: 1-562, part 2: 563-906. Leiden & Boston (Brill).
and
Rajaei, H., Hausmann, A., Scoble, M., Wanke, D., Plotkin, D., Brehm, G., Murillo-Ramos, L. & Sihvonen, P. (2022): An online taxonomic facility of Geometridae (Lepidoptera), with an overview of global species richness and systematics. Integrative Systematics, 5 (2): 145-192. https://doi.org/10.18476/2022.577933
with related database https://geometroidea.smns-bw.org/geometridae/Catalogue/?q=Dicrognophos