[[:en:Geographical (magazine)|[en]]]&rft.atitle=There are numerous points where three countries meet. Are there any with four?&rft.volume=75&rft.issue=12&rft.pages=19&rft.date=December 2003&rft.issn=0016-741X&rft.aulast=Nolan&rft.aufirst=J.&rfr id=info:sid/uk.wikipedia.org:Чотиримежжя,2025,profil,profil baru,artikel,literatur,referensi,informasi">