Sh:1065

Bib entry
@article{Sh:1065,
 author = {Shelah, Saharon and Ulrich, Douglas},
 title = {{$\le_{SP}$ can have infinitely many classes}},
 note = {\href{https://arxiv.org/abs/1804.08523}{arXiv: 1804.08523}},
 arxiv_number = {1804.08523}
}