Lev Yu. Glebsky Gelasio Salazar The crossing number of <i>C<sub>m</sub></i> × <i>C<sub>n</sub></i> is as conjectured for <i>n</i> >= <i>m</i>(<i>m</i> + 1). 53-72 2004 47 Journal of Graph Theory 1 http://dx.doi.org/10.1002/jgt.20016 db/journals/jgt/jgt47.html#GlebskyS04