/// <summary>
 /// 完整封装模块
 /// </summary>
 /// <param name="title"></param>
 /// <param name="authors"></param>
 /// <param name="type"></param>
 /// <param name="year"></param>
 /// <param name="month"></param>
 /// <param name="journal"></param>
 /// <param name="ee"></param>
 /// <param name="url"></param>
 /// <param name="series"></param>
 /// <param name="volume"></param>
 /// <param name="publisher"></param>
 /// <param name="isbn"></param>
 /// <param name="note"></param>
 /// <param name="pages"></param>
 /// <param name="number"></param>
 /// <param name="booktitle"></param>
 /// <param name="cdrom"></param>
 /// <param name="crossref"></param>
 /// <param name="school"></param>
 public void PkgModule(out string title, out List <string> authors, out LITERATURE_TYPE type,
                       out List <string> year, out List <string> month, out List <string> journal, out List <string> ee, out List <string> url,
                       out List <string> series, out List <string> volume, out List <string> publisher, out List <string> isbn, out List <string> note,
                       out List <string> pages, out List <string> number, out List <string> booktitle, out List <string> cdrom, out List <string> crossref,
                       out List <string> school)
 {
     title     = this.title;
     authors   = this.authors;
     type      = this.type;
     year      = this.year;
     month     = this.month;
     journal   = this.journal;
     ee        = this.ee;
     url       = this.url;
     series    = this.series;
     volume    = this.volume;
     publisher = this.publisher;
     isbn      = this.isbn;
     note      = this.note;
     pages     = this.pages;
     number    = this.number;
     booktitle = this.booktitle;
     cdrom     = this.cdrom;
     crossref  = this.crossref;
     school    = this.school;
 }
 /// <summary>
 /// 简易封装模块
 /// </summary>
 /// <param name="title">文献名称</param>
 /// <param name="authors">作者姓名列表</param>
 /// <param name="type">文献类型</param>
 public void simple_PkgModule(out string title, out List <string> authors, out LITERATURE_TYPE type)
 {
     title   = this.title;
     authors = this.authors;
     type    = this.type;
 }
        }                                       //作者学校或者发表学校

        /// <summary>
        /// 文献的构造函数
        /// </summary>
        /// <param name="title">文献名称</param>
        /// <param name="authors">作者姓名列表</param>
        /// <param name="type">文献类型</param>
        public Literature_entity(string title, List <string> authors, LITERATURE_TYPE type)
        {
            this.title   = title;
            this.authors = authors;
            this.type    = type;
        }