fixing little bug in tutorial

docs/source/tutorial_tep.ipynb

@@ -204,7 +204,7 @@
    "source": [
     "## Importing data\n",
     "\n",
-    "The TEP simulation data originally provided by [Chiang et al. (2000)](https://books.google.com/books?hl=pt-BR&lr=&id=G71zWeHzg2QC&oi=fnd&pg=PA1&ots=jTMxhd5OsG&sig=Kp14U3gjLfq8DxKi0Gw5Tpb8RaQ) can be imported into the library using the `load_tennessee_eastman` function. This function requires an argument to specify the nature of data: use 0 for normal operation data and values from 1 to 20 for various process disturbances. Below, we demonstrate how to import normal operation data for training purposes and data corresponding to disturbance event `IDV(1)` for testing. In this dataset, disturbances are introduced after 8 hours of operation. By convention, normal datasets start on `2020-01-01 00:00:00` and faulty datasets start on `2020-02-01 00:00:00`."
+    "The TEP simulation data originally provided by [Chiang et al. (2000)](https://link.springer.com/book/10.1007/978-1-4471-0347-9) can be imported into the library using the `load_tennessee_eastman` function. This function requires an argument to specify the nature of data: use 0 for normal operation data and values from 1 to 20 for various process disturbances. Below, we demonstrate how to import normal operation data for training purposes and data corresponding to disturbance event `IDV(1)` for testing. In this dataset, disturbances are introduced after 8 hours of operation. By convention, normal datasets start on `2020-01-01 00:00:00` and faulty datasets start on `2020-02-01 00:00:00`."
    ]
   },
   {