* [http://vinoto.eu/contentnode/%D1%82%D0%B5%D1%85%D0%BD%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F-%D0%BD%D0%B0-%D1%81%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8-%D0%B2%D0%B8%D0%BD%D0%B023 Технология на специални вина]
* [http://vinoto.eu/contentnode/%D0%BF%D0%BE%D1%80%D1%82%D1%83%D0%B3%D0%B0%D0%BB%D0%B8%D1%8F-%D1%80%D0%B0%D0%B9%D0%BE%D0%BD%D1%8A%D1%82-%D0%BD%D0%B0-%D0%B4%D1%83%D1%80%D0%BE-%D0%B2%D0%B8%D0%BD%D0%B0%D1%82%D0%B0-%D0%BF%D0%BE%D1%80%D1%82107 Португалия - районът на Дуро - вината Порт]
* [http://vinoto.eu/contentnode/%D0%BF%D0%BE%D1%80%D1%82%D1%83%D0%B3%D0%B0%D0%BB%D0%B8%D1%8F-%D1%81%D1%82%D0%B8%D0%BB%D0%BE%D0%B2%D0%B5-%D0%BD%D0%B0-%D0%B2%D0%B8%D0%BD%D0%B0%D1%82%D0%B0-%D0%BF%D0%BE%D1%80%D1%82108 Португалия - стилове на вината Порт]
* [http://vinoto.eu/contentnode/%D0%B4%D0%B5%D0%BA%D0%B0%D0%BD%D1%82%D0%B8%D1%80%D0%B0%D0%BD%D0%B5-%D0%BD%D0%B0-%D0%BF%D0%BE%D1%80%D1%82-%D0%B2%D0%B8%D0%BD%D0%B033 Декантиране на Порт вина]
