POLYGROUPOID, POLYQUASIGROUP, POLYLOOP AND THEIR NUCLEI: POLYGROUPOID, POLYQUASIGROUP, POLYLOOP AND THEIR NUCLEI. JNMS [Internet]. 2025 Mar. 25 [cited 2026 Apr. 6];44(1):115-37. Available from: https://ojs.ictp.it/jnms/index.php/jnms/article/view/1152