by Lubich, Martin, Papazov, Velimir, Popov, Elenko, Georgieva, Radostina, Dmitrenko, Dmitrii, Bojkov, Borislav, Slavov, Chavdar, Vassilev, Peter, Atanassova, Vassia, Todorova, Lyudmila, Atanassov, Krassimir T.
Published in Mathematics (Basel) (01.02.2022)