How to attach css file in gulp task less?

Question

gulp.js

There is such a task for compiling less files:

gulp.task 'less', ->
  gulp.src([
    './src/less/app.less'
    './src/less/responsive.less'
  ]).pipe(less(paths: [
    path.resolve(__dirname, 'src/less')
    path.resolve(__dirname, 'bower_components')
  ])).pipe(mobilizer('app.css',
    'app.css':
      hover: 'exclude'
      screens: [ '0px' ]
    'hover.css':
      hover: 'only'
      screens: [ '0px' ]))
        .pipe(cssmin())
        .pipe(rename(suffix: '.min'))
        .pipe gulp.dest(path.join(config.dest, 'css'))
  return

You need to attach some css files from bower_components. Tell me how to do it?