Kopczynski, ErykErykKopczynskiTONY TAN2020-05-042020-05-042018https://scholars.lib.ntu.edu.tw/handle/123456789/490111A note on first-order spectra with binary relations.journal article10.23638/LMCS-14(2:4)2018https://doi.org/10.23638/LMCS-14(2:4)2018