Source: wikibot/berezinskii-kosterlitz-thouless-transition
= Berezinskii–Kosterlitz–Thouless transition
{wiki=Berezinskii–Kosterlitz–Thouless_transition}
= Berezinskii–Kosterlitz–Thouless transition
{wiki=Berezinskii–Kosterlitz–Thouless_transition}