1. 
This is how the model is described in "telegram style". It means that the death rate m_{ijk} for a given year j, age i and sex k is specified as m_{ijk} = a_{i} f_{jk , }where a_{i} is the effect of the current age and f_{jk} is an interaction term formed from the variables YEAR and SEX.

2. 
To assess goodness of fit I computed deviance residuals and plotted them in the form of a Lexis map (not included). Such a presentation of residuals helps to reveal the ages and years that suffer from a lack of fit.

3. 
19501994.

4. 
The model specifies that death rate m_{ijk} is proportional to the current year, age, and sex m_{ijk} = y_{i} a_{j} s_{k},_{ }where y_{i} is the effect of the current year, a_{j} is the effect of the current age, and s_{k} is the effect of sex.

5. 
This figure has been produced with the help of the program Lexis. This program is a part of Ph.D. thesis [Andreev 1999] and can be obtained free of charge from Kirill Andreev.

6. 
Hereafter if not special references are included author's computations based on WHO mortality database (http://www.who.int/whosis/mort/).
