000			00309nam a2200109Ia 4500
008			160531s9999 xx 000 0 und d
100			_aBogomolny, Alexander.
245			_aProofs in Mathematics
245			_cby Alexander Bogomolny
260			_c2013
856			_uhttp://www.cut-the-knot.org/proofs/index.shtml
999			_c295293 _d295293