[Tex/LaTex] Svmono and “real page dimensions”

Question

I'm writing a document with the Springer's template svmono. Clearly the margins and more generally the page layout is automatically setted. Despite this, the output file is displayed as an A4 pdf file. I want to print my document ''like a book'', namely in a format that is smaller than an A4 paper; so which is the best way to set the page dimensions? Clearly the text should result centered into the page.

Addenda:
I've tried this solution:

\documentclass[envcountsame,envcountchap]{svmono} 
\usepackage{subfiles}
\usepackage[utf8]{inputenc} 
\usepackage[bottom]{footmisc}
\usepackage{microtype}
\usepackage{stmaryrd}   
\usepackage{amsmath}
\usepackage{mathrsfs} 
\usepackage{amssymb} 
\usepackage[all,cmtip]{xy}
\usepackage{faktor}
\usepackage[colorlinks={true},linkcolor={blue},citecolor={blue}]{hyperref}
\usepackage[frame,width=15truecm,height=23.5truecm,center]{crop}
\begin{document}
 blablabla
\end{document}

but in this way the paper is cutted. I'd like to mantain the above dimensions (i.e. width=15truecm,height=23.5truecm) but with some crop marks to underline the ''real'' printable area.

Answer 1

The key to a possible solution is the geometry package, which sets the corresponding dimensions. Including crop after geometry is strongly advised.

\documentclass[envcountsame,envcountchap]{svmono} 
\usepackage{subfiles}
\usepackage[utf8]{inputenc} 
\usepackage[bottom]{footmisc}
\usepackage{microtype}
\usepackage{stmaryrd}   
\usepackage{amsmath}
\usepackage{mathrsfs} 
\usepackage{amssymb} 
\usepackage[all,cmtip]{xy}
\usepackage{faktor}
\usepackage[colorlinks={true},linkcolor={blue},citecolor={blue}]{hyperref}
%\usepackage[frame,width=15truecm,height=23.5truecm,center]{crop}
\usepackage{geometry}
\usepackage[a4,frame,axes,cross,pdftex,center]{crop}

\usepackage{blindtext}
\geometry{width=15cm,height=23.5cm}
\begin{document}
\blindtext[10]
\end{document}

Please use the options to crop at will, I just used them to show the frame etc. I also added blindtext to show the effect. The screenshot below is itself 'cropped' ;-)

Perhaps, there is also some need to change the geometry, I did not print my solution and checked the crop mark.