NOT KNOWN FACTUAL STATEMENTS ABOUT PNL

I discovered a serious error in a paper published by my professor's past college student. To whom should I report my findings?La mirada dirigida hacia el ángulo inferior izquierdo revela que estamos inmersos en un monósymbol inside que nos recuerda sensaciones y emociones.I'm interested in being aware of the PnL concerning $t_0$ and $t_2$ of beco