Collinder 135 and UBC 7: A physical pair of open clusters
Dana A. Kovaleva, Marina Ishchenko, Ekaterina Postnikova, Peter Berczik, Anatoly E. Piskunov, Nina V. Kharchenko, Evgeny Polyachenko, Sabine Reffert, Kseniia Sysoliatina and Andreas Just
A&A, 642 (2020) L4
DOI: https://doi.org/10.1051/0004-6361/202039215
