div class="control">
          <div class="select is-small">
            <select name="searchtype" aria-label="Field to search">
              <option value="all" selected="selected">All fields</option>
              <option value="title">Title</option>
              <option value="author">Author</option>
              <option value="abstract">Abstract</option>
              <option value="comments">Comments</option>
              <option value="journal_ref">Journal reference</option>
              <option 