link:
video con elementos adicionales:
https://www.youtube.com/watch?v=W4i_gmGtk6M&ebc=ANyPxKr6HoP8Igxv6vw4fm7-hg8ZlTJdZcP1TR40R4sssWxaz1h0F9ehF38eUiTOwfw9ayOvlqiyGKXlP2LR-mS6x9tKC6w6ag
link de elasticidades de precios y cruzadas
https://www.youtube.com/watch?v=JAyzScgY4No&ebc=ANyPxKr6HoP8Igxv6vw4fm7-hg8ZlTJdZcP1TR40R4sssWxaz1h0F9ehF38eUiTOwfw9ayOvlqiyGKXlP2LR-mS6x9tKC6w6ag