https://pure.psu.edu/en/publications/a-reciprocity-theorem-for-certain-q-series-found-in-ramanujans-lo/
A reciprocity theorem for certain q-series found in Ramanujan's lost notebook - Penn State
reciprocity theoremq seriespenn statecertainfound
https://drhuang.com/science/mathematics/math%20word/math/c/c820.htm
Cubic Reciprocity Theorem
Cubic Reciprocity Theorem
reciprocity theoremcubic