[^1]: **Jenkins, Barrie; Mullinger, Peter.** [_Industrial and Process Furnaces: Principles, Design and Operation. Butterworth-Heinemann._](https://books.google.pt/books?hl=pt-PT&lr=&id=cGVkEAAAQBAJ&oi=fnd&pg=PP1&dq=Jenkins,+Barrie%3B+Mullinger,+Peter.**+%5B_Industrial+and+Process+Furnaces:+Principles,+Design+and+Operation.+Butterworth-Heinemann.&ots=NEjw4MUEYz&sig=RRKk-pWoJusKrSQLDBwEYWAH0v4&redir_esc=y#v=onepage&q=Jenkins%2C%20Barrie%3B%20Mullinger%2C%20Peter.**%20%5B_Industrial%20and%20Process%20Furnaces%3A%20Principles%2C%20Design%20and%20Operation.%20Butterworth-Heinemann.&f=false)
+
[1]: **Jenkins, Barrie; Mullinger, Peter.** [_Industrial and Process Furnaces: Principles, Design and Operation. Butterworth-Heinemann._](https://books.google.pt/books?hl=pt-PT&lr=&id=cGVkEAAAQBAJ&oi=fnd&pg=PP1&dq=Jenkins,+Barrie%3B+Mullinger,+Peter.**+%5B_Industrial+and+Process+Furnaces:+Principles,+Design+and+Operation.+Butterworth-Heinemann.&ots=NEjw4MUEYz&sig=RRKk-pWoJusKrSQLDBwEYWAH0v4&redir_esc=y#v=onepage&q=Jenkins%2C%20Barrie%3B%20Mullinger%2C%20Peter.**%20%5B_Industrial%20and%20Process%20Furnaces%3A%20Principles%2C%20Design%20and%20Operation.%20Butterworth-Heinemann.&f=false)
-
[^2]: **J. Coulson & J Richardson.** [_An introduction to Chemical Engineering Design._](chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://sakura03.wordpress.com/wp-content/uploads/2012/03/chemical_engineering_design__fourth_edition__chemical_engineering_volume_6__coulson__amp__richardson__039_s_chemical_engineering_.pdf) Chemical Engineering Volume 6, Pergamon Press; 1st edition 1983.
+
[2]: **J. Coulson & J Richardson.** [_An introduction to Chemical Engineering Design._](chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://sakura03.wordpress.com/wp-content/uploads/2012/03/chemical_engineering_design__fourth_edition__chemical_engineering_volume_6__coulson__amp__richardson__039_s_chemical_engineering_.pdf) Chemical Engineering Volume 6, Pergamon Press; 1st edition 1983.
-
[^3]: **https://edisciplinas.usp.br/pluginfile.php/4710008/mod_folder/content/0/MaqTermicas_Fornalhas.pdf?forcedownload=1** (Acesso em 26-02-2020)
+
[3] https://edisciplinas.usp.br/pluginfile.php/4710008/mod_folder/content/0/MaqTermicas_Fornalhas.pdf?forcedownload=1. (Acesso em 26-02-2020)
