If you're a quant
Pure Alpha in Pairs Trading: An OPTICS and Copulae Approach (Press Release; IAQF 2023 Winning Paper)
Cupid: Pairs Trading for Fun and Profit
If you're not*
*Or are and also like photography.
Digital ones edited in Darktable.
Primarily taken on a Pentax K1000 and KP, some on an MZ50.